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Counties in Iowa


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Iowa

2022 population: 3,200,517   ( 154,162 from 2010 , 10,145 from 2020)
Land area: 55853.2 square miles
Population density: 57.3 persons per square mile

2022 Census data
White:2,679,799 83.73% 0.8%
Black:134,4244.20% 54.7%
Indian:9,9660.31% 16.1%
Asian:93,2662.91% 71.5%
2+ races:61,2571.91% 47.0%
Hispanic:221,8056.93% 46.4%
Total non-White:520,71816.27% 50.8%

2020-2022 ComponentsNumberRate
Births:82,052 12.9
Deaths:79,00312.4
Net Migration: -6,877-1.1
Net Immigration: 13,2482.1
Change in White population:-21,324 -0.7
Change in Non-White pop.:175,486 5.8



Historical Presidential Election Results for Iowa



Click on the Year to view county-level data for that election.

YearTurnout WinnerRunner-Up OtherTotal Votes Diff
(US)
PUSVEV
2020 69% Donald Trump* (R) 897,672 53.1% Joe Biden (D) 759,061 44.9% 34,138 [+] 2.0% 1,690,871 6 1.07% 6
2016 66% Donald Trump (R) 800,983 51.1% Hillary Clinton (D) 653,669 41.7% 111,379 [+] 7.1% 1,566,031 5 1.14% 6
2012 68% Barack Obama* (D) 822,544 52.0% Mitt Romney (R) 730,617 46.2% 29,019 [+] 1.8% 1,582,180 -1 1.22% 6
2008 68% Barack Obama (D) 828,940 53.9% John McCain (R) 682,379 44.4% 25,804 [+] 1.7% 1,537,123 -1 1.17% 7
2004 68% George W. Bush* (R) 751,957 49.9% John Kerry (D) 741,898 49.2% 13,053 [+] 0.9% 1,506,908 -1 1.23% 7
2000 60% Albert Gore, Jr. (D) 638,517 48.5% George W. Bush (R) 634,373 48.2% 42,673 [+] 3.2% 1,315,563 0 1.25% 7
1996 58% Bill Clinton* (D) 620,258 50.3% Robert Dole (R) 492,644 39.9% 121,173 [+] 9.8% 1,234,075 -1 1.28% 7
1992 65% Bill Clinton (D) 586,353 43.3% George Bush* (R) 504,891 37.3% 263,363 [+] 19.4% 1,354,607 0 1.30% 7
1988 61% Michael Dukakis (D) 670,557 54.7% George Bush (R) 545,355 44.5% 9,702 [+] 0.8% 1,225,614 -9 1.34% 8
1984 64% Ronald Reagan* (R) 703,088 53.3% Walter Mondale (D) 605,620 45.9% 11,097 0.8% 1,319,805 -6 1.42% 8
1980 63% Ronald Reagan (R) 676,026 51.3% Jimmy Carter* (D) 508,672 38.6% 132,963 [+] 10.1% 1,317,661 1 1.52% 8
1976 65% Gerald Ford* (R) 632,863 49.5% Jimmy Carter (D) 619,931 48.5% 26,512 [+] 2.1% 1,279,306 1 1.57% 8
1972 64% Richard Nixon* (R) 706,207 57.6% George McGovern (D) 496,206 40.5% 23,531 [+] 1.9% 1,225,944 -3 1.58% 8
1968 69% Richard Nixon (R) 619,106 53.0% Hubert Humphrey (D) 476,699 40.8% 72,126 [+] 6.2% 1,167,931 10 1.60% 9
1964 70% Lyndon Johnson* (D) 733,030 61.9% Barry Goldwater (R) 449,148 37.9% 2,361 0.2% 1,184,539 -1 1.68% 9
1960 76% Richard Nixon (R) 722,381 56.7% John Kennedy (D) 550,565 43.2% 864 0.1% 1,273,810 7 1.85% 10
1956 71% Dwight Eisenhower* (R) 729,187 59.1% Adlai Stevenson (D) 501,858 40.7% 3,519 0.3% 1,234,564 2 1.99% 10
1952 74% Dwight Eisenhower (R) 808,906 63.8% Adlai Stevenson (D) 451,313 35.6% 8,354 0.7% 1,268,573 9 2.05% 10
1948 62% Harry Truman* (D) 522,380 50.3% Thomas Dewey (R) 494,018 47.6% 21,874 [+] 2.1% 1,038,272 2 2.13% 10
1944 63% Thomas Dewey (R) 547,267 52.0% Franklin Roosevelt* (D) 499,876 47.5% 5,456 0.5% 1,052,599 6 2.19% 10
1940 74% Wendell Willkie (R) 632,370 52.0% Franklin Roosevelt* (D) 578,802 47.6% 4,260 0.4% 1,215,432 7 2.44% 11
1936 74% Franklin Roosevelt* (D) 621,756 54.4% Alf Landon (R) 487,977 42.7% 33,004 [+] 2.9% 1,142,737 6 2.50% 11
1932 68% Franklin Roosevelt (D) 598,019 57.7% Herbert Hoover* (R) 414,433 40.0% 24,135 [+] 2.3% 1,036,587 0 2.61% 11
1928 69% Herbert Hoover (R) 623,570 61.8% Al Smith (D) 379,011 37.6% 6,608 [+] 0.7% 1,009,189 4 2.74% 13
1924 68% Calvin Coolidge (R) 537,458 55.0% Robert LaFollette (Prog) 274,448 28.1% 164,864 [+] 16.9% 976,770 1 3.36% 13
1920 63% Warren Harding (R) 634,674 70.9% James Cox (D) 227,804 25.5% 32,487 [+] 3.6% 894,965 11 3.34% 13
1916 38% Charles Evans Hughes (R) 279,331 54.3% Woodrow Wilson* (D) 220,597 42.9% 14,806 [+] 2.9% 514,734 8 2.78% 13
1912 38% Woodrow Wilson (D) 185,325 37.6% William Taft* (R) 161,729 32.9% 145,212 [+] 29.5% 492,266 10 3.27% 13
1908 40% William Taft (R) 275,209 55.6% William J. Bryan (D) 200,771 40.6% 18,789 [+] 3.8% 494,769 4 3.32% 13
1904 40% Theodore Roosevelt (R) 308,158 63.4% Alton Parker (D) 149,276 30.7% 28,659 [+] 5.9% 486,093 7 3.59% 13
1900 43% William McKinley* (R) 307,808 58.0% William J. Bryan (D) 209,265 39.5% 13,282 [+] 2.5% 530,355 6 3.80% 13
* incumbent         PUSV: percent of U.S. vote



2020 President, Iowa
CandidateVotesPct
Joe Biden (D) 759,061 44.9%
Donald Trump* (R) 897,672 53.1%
Jo Jorgensen (Lbt) 19,637 1.2%
Other 14,501 0.9%
TOTAL 1,690,871
Turnout: 69% Diff (US): 6


2016 President, Iowa
CandidateVotesPct
Hillary Clinton (D) 653,669 41.7%
Donald Trump (R) 800,983 51.1%
Gary Johnson (Lbt) 59,186 3.8%
Jill Stein (Grn) 11,479 0.7%
Evan McMullin (I) 12,366 0.8%
Other 28,348 1.8%
TOTAL 1,566,031
Turnout: 66% Diff (US): 5


2012 President, Iowa
CandidateVotesPct
Barack Obama* (D) 822,544 52.0%
Mitt Romney (R) 730,617 46.2%
Gary Johnson (Lbt) 12,926 0.8%
Other 16,093 1.0%
TOTAL 1,582,180
Turnout: 68% Diff (US): -1


2008 President, Iowa
CandidateVotesPct
Barack Obama (D) 828,940 53.9%
John McCain (R) 682,379 44.4%
Ralph Nader (I) 8,014 0.5%
Bob Barr (Lbt) 4,590 0.3%
Other 13,200 0.9%
TOTAL 1,537,123
Turnout: 68% Diff (US): -1


2004 President, Iowa
CandidateVotesPct
George W. Bush* (R) 751,957 49.9%
John Kerry (D) 741,898 49.2%
Ralph Nader (I) 5,973 0.4%
Other 7,080 0.5%
TOTAL 1,506,908
Turnout: 68% Diff (US): -1


2000 President, Iowa
CandidateVotesPct
George W. Bush (R) 634,373 48.2%
Albert Gore, Jr. (D) 638,517 48.5%
Ralph Nader (Grn) 29,374 2.2%
Pat Buchanan (Ref) 5,731 0.4%
Other 7,568 0.6%
TOTAL 1,315,563
Turnout: 60% Diff (US): 0


1996 President, Iowa
CandidateVotesPct
Bill Clinton* (D) 620,258 50.3%
Robert Dole (R) 492,644 39.9%
Ross Perot (Ref) 105,159 8.5%
Ralph Nader (Grn) 6,550 0.5%
Harry Browne (Lbt) 2,315 0.2%
Other 7,149 0.6%
TOTAL 1,234,075
Turnout: 58% Diff (US): -1


1992 President, Iowa
CandidateVotesPct
Bill Clinton (D) 586,353 43.3%
George Bush* (R) 504,891 37.3%
Ross Perot (I) 253,468 18.7%
Other 9,895 0.7%
TOTAL 1,354,607
Turnout: 65% Diff (US): 0


1988 President, Iowa
CandidateVotesPct
George Bush (R) 545,355 44.5%
Michael Dukakis (D) 670,557 54.7%
Ron Paul (Lbt) 2,494 0.2%
Other 7,208 0.6%
TOTAL 1,225,614
Turnout: 61% Diff (US): -9


1984 President, Iowa
CandidateVotesPct
Ronald Reagan* (R) 703,088 53.3%
Walter Mondale (D) 605,620 45.9%
Other 11,097 0.8%
TOTAL 1,319,805
Turnout: 64% Diff (US): -6


1980 President, Iowa
CandidateVotesPct
Ronald Reagan (R) 676,026 51.3%
Jimmy Carter* (D) 508,672 38.6%
John Anderson (I) 115,633 8.8%
Edward Clark (Lbt) 13,123 1.0%
Other 4,207 0.3%
TOTAL 1,317,661
Turnout: 63% Diff (US): 1


1976 President, Iowa
CandidateVotesPct
Jimmy Carter (D) 619,931 48.5%
Gerald Ford* (R) 632,863 49.5%
Eugene McCarthy (I) 20,051 1.6%
Other 6,461 0.5%
TOTAL 1,279,306
Turnout: 65% Diff (US): 1


1972 President, Iowa
CandidateVotesPct
Richard Nixon* (R) 706,207 57.6%
George McGovern (D) 496,206 40.5%
John Schmitz (Amer) 22,056 1.8%
Other 1,475 0.1%
TOTAL 1,225,944
Turnout: 64% Diff (US): -3


1968 President, Iowa
CandidateVotesPct
Richard Nixon (R) 619,106 53.0%
Hubert Humphrey (D) 476,699 40.8%
George Wallace (AIP) 66,422 5.7%
Other 5,704 0.5%
TOTAL 1,167,931
Turnout: 69% Diff (US): 10


1964 President, Iowa
CandidateVotesPct
Lyndon Johnson* (D) 733,030 61.9%
Barry Goldwater (R) 449,148 37.9%
Other 2,361 0.2%
TOTAL 1,184,539
Turnout: 70% Diff (US): -1


1960 President, Iowa
CandidateVotesPct
John Kennedy (D) 550,565 43.2%
Richard Nixon (R) 722,381 56.7%
Other 864 0.1%
TOTAL 1,273,810
Turnout: 76% Diff (US): 7


1956 President, Iowa
CandidateVotesPct
Dwight Eisenhower* (R) 729,187 59.1%
Adlai Stevenson (D) 501,858 40.7%
Other 3,519 0.3%
TOTAL 1,234,564
Turnout: 71% Diff (US): 2


1952 President, Iowa
CandidateVotesPct
Dwight Eisenhower (R) 808,906 63.8%
Adlai Stevenson (D) 451,313 35.6%
Other 8,354 0.7%
TOTAL 1,268,573
Turnout: 74% Diff (US): 9


1948 President, Iowa
CandidateVotesPct
Harry Truman* (D) 522,380 50.3%
Thomas Dewey (R) 494,018 47.6%
Henry Wallace (Prog) 12,125 1.2%
Other 9,749 0.9%
TOTAL 1,038,272
Turnout: 62% Diff (US): 2


1944 President, Iowa
CandidateVotesPct
Franklin Roosevelt* (D) 499,876 47.5%
Thomas Dewey (R) 547,267 52.0%
Other 5,456 0.5%
TOTAL 1,052,599
Turnout: 63% Diff (US): 6


1940 President, Iowa
CandidateVotesPct
Franklin Roosevelt* (D) 578,802 47.6%
Wendell Willkie (R) 632,370 52.0%
Other 4,260 0.4%
TOTAL 1,215,432
Turnout: 74% Diff (US): 7


1936 President, Iowa
CandidateVotesPct
Franklin Roosevelt* (D) 621,756 54.4%
Alf Landon (R) 487,977 42.7%
William Lemke (Union) 29,687 2.6%
Norman Thomas (Soc) 1,373 0.1%
Other 1,944 0.2%
TOTAL 1,142,737
Turnout: 74% Diff (US): 6


1932 President, Iowa
CandidateVotesPct
Franklin Roosevelt (D) 598,019 57.7%
Herbert Hoover* (R) 414,433 40.0%
Norman Thomas (Soc) 20,367 2.0%
Other 3,768 0.4%
TOTAL 1,036,587
Turnout: 68% Diff (US): 0


1928 President, Iowa
CandidateVotesPct
Herbert Hoover (R) 623,570 61.8%
Al Smith (D) 379,011 37.6%
Norman Thomas (Soc) 2,960 0.3%
Other 3,648 0.4%
TOTAL 1,009,189
Turnout: 69% Diff (US): 4


1924 President, Iowa
CandidateVotesPct
Calvin Coolidge (R) 537,458 55.0%
John Davis (D) 160,382 16.4%
Robert LaFollette (Prog) 274,448 28.1%
Other 4,482 0.5%
TOTAL 976,770
Turnout: 68% Diff (US): 1


1920 President, Iowa
CandidateVotesPct
Warren Harding (R) 634,674 70.9%
James Cox (D) 227,804 25.5%
Eugene Debs (Soc) 16,981 1.9%
Parley Christiansen (FL) 10,321 1.2%
Aaron Watkins (Proh) 4,197 0.5%
Other 988 0.1%
TOTAL 894,965
Turnout: 63% Diff (US): 11


1916 President, Iowa
CandidateVotesPct
Woodrow Wilson* (D) 220,597 42.9%
Charles Evans Hughes (R) 279,331 54.3%
Allan Benson (Soc) 10,976 2.1%
James Hanly (Proh) 3,371 0.7%
Other 459 0.1%
TOTAL 514,734
Turnout: 38% Diff (US): 8


1912 President, Iowa
CandidateVotesPct
Woodrow Wilson (D) 185,325 37.6%
Theodore Roosevelt (Prog) 119,805 24.3%
William Taft* (R) 161,729 32.9%
Eugene Debs (Soc) 16,967 3.4%
Eugene Chafin (Proh) 8,440 1.7%
TOTAL 492,266
Turnout: 38% Diff (US): 10


1908 President, Iowa
CandidateVotesPct
William Taft (R) 275,209 55.6%
William J. Bryan (D) 200,771 40.6%
Eugene Debs (Soc) 8,287 1.7%
Eugene Chafin (Proh) 9,837 2.0%
Thomas Hisgen (I) 404 0.1%
Other 261 0.1%
TOTAL 494,769
Turnout: 40% Diff (US): 4


1904 President, Iowa
CandidateVotesPct
Theodore Roosevelt (R) 308,158 63.4%
Alton Parker (D) 149,276 30.7%
Eugene Debs (Soc) 14,849 3.1%
Silas Swallow (Proh) 11,603 2.4%
Thomas Watson (Pop) 2,207 0.5%
TOTAL 486,093
Turnout: 40% Diff (US): 7


1900 President, Iowa
CandidateVotesPct
William McKinley* (R) 307,808 58.0%
William J. Bryan (D) 209,265 39.5%
John Woolley (Proh) 9,502 1.8%
Eugene Debs (Soc) 2,742 0.5%
Other 1,038 0.2%
TOTAL 530,355
Turnout: 43% Diff (US): 6
* incumbent

Historical Statewide Election Results for Iowa

Click on the Year to view county-level data for that election.

YearTypeTurnoutWinnerRunner-Up OtherTotal Votes
2022 S3 49% Charles Grassley* (R) 681,501 56.0% Michael Franken (D) 533,330 43.8% 1,815 0.1% 1,216,646
2022 G 50% Kim Reynolds* (R) 709,198 58.0% Deidre DeJear (D) 482,950 39.5% 29,716 [+] 2.4% 1,221,864
2020 S2 68% Joni Ernst* (R) 864,997 51.7% Theresa Greenfield (D) 754,859 45.2% 51,972 [+] 3.1% 1,671,828
2018 G 55% Kim Reynolds* (R) 667,275 50.3% Fred Hubbell (D) 630,986 47.5% 29,377 [+] 2.2% 1,327,638
2016 S3 65% Charles Grassley* (R) 926,007 60.1% Patty Judge (D) 549,460 35.7% 65,569 [+] 4.3% 1,541,036
2014 G 48% Terry Branstad* (R) 667,325 59.0% Jack Hatch (D) 421,625 37.3% 42,308 [+] 3.7% 1,131,258
2014 S2 48% Joni Ernst (R) 588,575 52.1% Bruce Braley (D) 494,370 43.8% 46,755 [+] 4.1% 1,129,700
2010 G 48% Terry Branstad (R) 592,494 52.8% Chet Culver* (D) 484,798 43.2% 44,721 [+] 4.0% 1,122,013
2010 S3 48% Charles Grassley* (R) 718,215 64.4% Roxanne Conlin (D) 371,686 33.3% 26,162 [+] 2.3% 1,116,063
2008 S2 66% Tom Harkin* (D) 941,665 62.7% Christopher Reed (R) 560,006 37.3% 1,247 0.1% 1,502,918
2006 G 47% Chet Culver (D) 569,021 54.0% Jim Nussle (R) 467,425 44.4% 16,809 [+] 1.6% 1,053,255
2004 S3 66% Charles Grassley* (R) 1,038,175 70.2% Arthur Small (D) 412,365 27.9% 28,688 [+] 1.9% 1,479,228
2002 G 46% Tom Vilsack* (D) 540,449 52.7% Doug Gross (R) 456,612 44.5% 28,741 [+] 2.8% 1,025,802
2002 S2 46% Tom Harkin* (D) 554,278 54.2% Greg Ganske (R) 447,892 43.8% 20,905 [+] 2.0% 1,023,075
1998 G 45% Tom Vilsack (D) 500,231 52.3% Jim Ross Lightfoot (R) 444,787 46.5% 11,400 [+] 1.2% 956,418
1998 S3 44% Charles Grassley* (R) 648,480 68.4% David Osterberg (D) 289,049 30.5% 10,378 [+] 1.1% 947,907
1996 S2 58% Tom Harkin* (D) 634,166 51.8% Jim Ross Lightfoot (R) 571,807 46.7% 18,081 [+] 1.5% 1,224,054
1994 G 47% Terry Branstad* (R) 566,395 56.8% Bonnie Campbell (D) 414,453 41.6% 16,400 [+] 1.6% 997,248
1992 S3 62% Charles Grassley* (R) 899,761 69.6% Jean Lloyd-Jones (D) 351,561 27.2% 41,172 [+] 3.2% 1,292,494
1990 G 47% Terry Branstad* (R) 591,852 60.6% Donald Avenson (D) 379,372 38.9% 5,259 [+] 0.5% 976,483
1990 S2 48% Tom Harkin* (D) 529,571 53.8% Tom Tauke (R) 453,273 46.1% 1,089 0.1% 983,933
1986 G 45% Terry Branstad* (R) 472,712 51.9% Lowell Junkins (D) 436,987 48.0% 924 0.1% 910,623
1986 S3 44% Charles Grassley* (R) 588,880 66.0% John Roehrick (D) 299,406 33.6% 3,476 [+] 0.4% 891,762
1984 S2 63% Tom Harkin (D) 716,883 55.5% Roger Jepsen* (R) 564,381 43.7% 11,436 [+] 0.9% 1,292,700
1982 G 50% Terry Branstad (R) 548,313 52.8% Roxanne Conlin (D) 483,291 46.5% 6,625 [+] 0.6% 1,038,229
1980 S3 61% Charles Grassley (R) 683,014 53.5% John Culver* (D) 581,545 45.5% 12,475 [+] 1.0% 1,277,034
1978 S2 45% Roger Jepsen (R) 421,598 51.1% Dick Clark* (D) 395,066 47.9% 7,990 [+] 1.0% 824,654
1978 G 46% Robert Ray* (R) 491,713 58.3% Jerry Fitzgerald (D) 345,519 41.0% 5,958 [+] 0.7% 843,190
1974 S3 49% John Culver (D) 462,947 52.0% David Stanley (R) 420,546 47.3% 6,068 [+] 0.7% 889,561
1974 G 51% Robert Ray* (R) 534,518 58.1% James Schaben (D) 377,553 41.0% 8,387 [+] 0.9% 920,458
1972 S2 62% Dick Clark (D) 662,637 55.1% Jack Miller* (R) 530,525 44.1% 10,171 [+] 0.8% 1,203,333
1972 G 63% Robert Ray* (R) 707,177 58.4% Paul Franzenburg (D) 487,282 40.3% 15,763 [+] 1.3% 1,210,222
1970 G 45% Robert Ray* (R) 403,394 51.0% Robert Fulton (D) 368,911 46.6% 18,936 [+] 2.4% 791,241
1968 G 67% Robert Ray (R) 614,328 54.1% Paul Franzenburg (D) 521,216 45.9% 945 [+] 0.1% 1,136,489
1968 S3 67% Harold Hughes (D) 574,884 50.2% David Stanley (R) 568,469 49.7% 733 [+] 0.1% 1,144,086
1966 G 53% Harold Hughes* (D) 494,259 55.3% William Murray (R) 394,518 44.2% 4,398 [+] 0.5% 893,175
1966 S2 51% Jack Miller* (R) 522,339 60.9% E.B. Smith (D) 324,114 37.8% 11,043 [+] 1.3% 857,496
1964 G 69% Harold Hughes* (D) 794,610 68.0% Evan Hultman (R) 365,131 31.3% 7,993 [+] 0.7% 1,167,734
1962 S3 48% Bourke Hickenlooper* (R) 431,364 53.4% E.B. Smith (D) 376,602 46.6% 6 0.0% 807,972
1962 G 49% Harold Hughes (D) 430,899 52.6% Norman Erbe* (R) 388,955 47.4% 0 0.0% 819,854
1960 G 74% Norman Erbe (R) 645,026 52.1% Edward McManus (D) 592,063 47.9% 0 0.0% 1,237,089
1960 S2 74% Jack Miller (R) 642,463 51.9% Herschel Loveless (D) 595,119 48.1% 0 0.0% 1,237,582
1958 G 49% Herschel Loveless* (D) 465,024 54.1% William Murray (R) 394,071 45.9% 0 0.0% 859,095
1956 G 69% Herschel Loveless (D) 616,852 51.2% Leo Hoegh* (R) 587,383 48.8% 0 0.0% 1,204,235
1956 S3 68% Bourke Hickenlooper* (R) 635,499 53.9% R.M. Evans (D) 543,156 46.1% 0 0.0% 1,178,655
1954 G 49% Leo Hoegh (R) 435,944 51.4% Clyde Herring (D) 410,255 48.3% 2,393 [+] 0.3% 848,592
1954 S2 49% Thomas Martin (R) 442,409 52.2% Guy Gillette* (D) 402,712 47.5% 2,234 [+] 0.3% 847,355
1952 G 72% William Beardsley* (R) 638,388 51.9% Herschel Loveless (D) 587,671 47.8% 3,986 [+] 0.3% 1,230,045
1950 G 51% William Beardsley* (R) 506,642 59.1% Lester Gillette (D) 347,176 40.5% 3,395 [+] 0.4% 857,213
1950 S3 51% Bourke Hickenlooper* (R) 470,613 54.8% Albert Loveland (D) 383,766 44.7% 4,144 [+] 0.5% 858,523
1948 G 59% William Beardsley (R) 553,900 55.7% Carroll Switzer (D) 434,432 43.7% 6,501 [+] 0.7% 994,833
1948 S2 59% Guy Gillette (D) 578,226 57.8% George Wilson* (R) 415,778 41.6% 6,408 [+] 0.6% 1,000,412
1946 G 38% Robert Blue* (R) 362,592 57.4% Frank Miles (D) 266,190 42.1% 2,911 [+] 0.5% 631,693
1944 S3 62% Bourke Hickenlooper (R) 523,963 51.3% Guy Gillette* (D) 494,229 48.4% 3,495 [+] 0.3% 1,021,687
1944 G 60% Robert Blue (R) 561,827 56.0% Richard Mitchell (D) 437,684 43.6% 3,752 [+] 0.4% 1,003,263
1942 S2 43% George Wilson (R) 410,383 58.0% Clyde Herring* (D) 295,194 41.7% 2,282 [+] 0.3% 707,859
1942 G 42% Bourke Hickenlooper (R) 438,547 62.7% Nelson Kraschel (D) 258,310 37.0% 2,073 [+] 0.3% 698,930
1940 G 72% George Wilson* (R) 620,480 52.7% John Valentine (D) 553,941 47.0% 2,960 [+] 0.3% 1,177,381
1938 S3 54% Guy Gillette* (D) 413,788 49.7% Lester Dickinson (R) 410,983 49.4% 7,068 [+] 0.8% 831,839
1938 G 55% George Wilson (R) 447,061 52.7% Nelson Kraschel* (D) 387,779 45.7% 13,473 [+] 1.6% 848,313
1936 S3 67% Guy Gillette (D) 536,075 51.9% Berry Halden (R) 478,521 46.3% 18,147 [+] 1.8% 1,032,743
1936 G 70% Nelson Kraschel (D) 524,178 48.6% George Wilson (R) 521,747 48.3% 33,567 [+] 3.1% 1,079,492
1936 S2 70% Clyde Herring (D) 539,555 50.3% Lester Dickinson* (R) 503,635 47.0% 28,526 [+] 2.7% 1,071,716
*: incumbent               +: ran on additional party lines               Type: G: Governor; S1,S2,S3: Senate Class 1, 2 or 3
italics: special election

Other Statewide Election Results for Iowa

YearTypeTurnoutWinnerRunner-Up OtherTotal Votes
2022 AG 49% Brenna Bird (R) 611,432 50.8% Tom Miller* (D) 590,890 49.1% 801 0.1% 1,203,123
2022 AGR 49% Mike Naig* (R) 730,285 61.1% John Norwood (D) 463,652 38.8% 770 0.1% 1,194,707
2022 AUD 49% Rob Sand* (D) 600,719 50.1% Todd Halbur (R) 597,826 49.8% 826 0.1% 1,199,371
2022 LG 0% Adam Gregg* (R) 0 0.0%       0 0.0% 0
2022 SOS 49% Paul Pate* (R) 723,250 60.0% Joel Miller (D) 480,474 39.9% 708 0.1% 1,204,432
2022 TRE 49% Roby Smith (R) 614,943 51.3% Michael Fitzgerald* (D) 584,021 48.7% 667 0.1% 1,199,631
2018 AG 48% Tom Miller* (D) 880,531 76.5% Marco Battaglia (Lbt) 262,131 22.8% 8,237 0.7% 1,150,899
2018 AGR 54% Mike Naig* (R) 651,552 50.4% Tim Gannon (D) 602,916 46.6% 39,562 [+] 3.1% 1,294,030
2018 AUD 54% Rob Sand (D) 660,169 51.0% Mary Mosiman* (R) 601,320 46.4% 33,879 [+] 2.6% 1,295,368
2018 LG 0% Adam Gregg* (R) 0 0.0%       0 0.0% 0
2018 SOS 54% Paul Pate* (R) 685,780 52.7% Deidre DeJear (D) 583,774 44.9% 31,363 [+] 2.4% 1,300,917
2018 TRE 54% Michael Fitzgerald* (D) 710,426 54.8% Jeremy Davis (R) 553,691 42.7% 31,733 [+] 2.4% 1,295,850
2014 AG 47% Tom Miller* (D) 616,711 56.1% Adam Gregg (R) 481,046 43.8% 1,249 0.1% 1,099,006
2014 AGR 46% Bill Northey* (R) 675,781 62.2% Sherrie Taha (D) 370,209 34.1% 40,240 [+] 3.7% 1,086,230
2014 AUD 45% Mary Mosiman* (R) 604,103 56.9% Jonathan Neiderbach (D) 456,525 43.0% 1,477 0.1% 1,062,105
2014 LG 0% Kim Reynolds* (R) 0 0.0%       0 0.0% 0
2014 SOS 46% Paul Pate (R) 529,275 48.5% Brad Anderson (D) 509,202 46.6% 53,603 [+] 4.9% 1,092,080
2014 TRE 46% Michael Fitzgerald* (D) 576,942 52.9% Sam Clovis (R) 476,633 43.7% 37,615 [+] 3.4% 1,091,190
2010 AG 47% Tom Miller* (D) 607,779 55.5% Brenna Findley (R) 486,057 44.4% 797 0.1% 1,094,633
2010 AGR 46% Bill Northey* (R) 674,572 62.8% Francis Thicke (D) 398,428 37.1% 849 0.1% 1,073,849
2010 AUD 46% David Vaudt* (R) 597,721 56.4% Jon Murphy (D) 460,493 43.5% 924 0.1% 1,059,138
2010 LG 0% Kim Reynolds (R) 0 0.0%       0 0.0% 0
2010 SOS 47% Matt Schultz (R) 537,758 49.8% Michael Mauro* (D) 508,121 47.0% 34,402 [+] 3.2% 1,080,281
2010 TRE 46% Michael Fitzgerald* (D) 567,422 52.9% David Jamison (R) 504,605 47.0% 795 0.1% 1,072,822
2006 AG 34% Tom Miller* (D) 748,181 99.2%       5,663 0.8% 753,844
2006 AGR 45% Bill Northey (R) 523,539 51.3% Denise O'Brien (D) 495,873 48.6% 608 0.1% 1,020,020
2006 AUD 30% David Vaudt* (R) 669,434 98.8%       7,916 1.2% 677,350
2006 LG 0% Patty Judge (D) 0 0.0%       0 0.0% 0
2006 SOS 45% Michael Mauro (D) 541,234 53.6% Mary Ann Hanusa (R) 467,561 46.3% 1,157 0.1% 1,009,952
2006 TRE 33% Michael Fitzgerald* (D) 737,198 99.2%       5,666 0.8% 742,864
2002 AG 45% Tom Miller* (D) 612,167 61.6% Dave Millage (R) 364,480 36.7% 17,016 [+] 1.7% 993,663
2002 AGR 44% Patty Judge* (D) 490,561 50.0% John Askew (R) 446,136 45.5% 44,750 [+] 4.6% 981,447
2002 AUD 43% David Vaudt (R) 464,469 48.6% Patrick Deluhery (D) 442,040 46.2% 49,646 [+] 5.2% 956,155
2002 LG 0% Sally Pederson* (D) 0 0.0%       0 0.0% 0
2002 SOS 45% Chet Culver* (D) 526,600 53.5% Mike Hartwig (R) 420,290 42.7% 38,151 [+] 3.9% 985,041
2002 TRE 44% Michael Fitzgerald* (D) 534,714 54.8% Matt Whitaker (R) 421,574 43.2% 20,031 [+] 2.1% 976,319
1998 AG 43% Tom Miller* (D) 603,523 65.4% Mark Schwickerath (R) 298,528 32.4% 20,314 [+] 2.2% 922,365
1998 AGR 42% Patty Judge (D) 451,715 50.0% Dan Brown (R) 424,940 47.1% 25,901 [+] 2.9% 902,556
1998 AUD 32% Richard Johnson* (R) 588,079 85.7% Ronn Young (Ref) 56,635 8.3% 41,589 [+] 6.1% 686,303
1998 LG 0% Sally Pederson (D) 0 0.0%       0 0.0% 0
1998 SOS 43% Chet Culver (D) 457,161 49.9% John Gilliland (R) 429,899 46.9% 28,951 [+] 3.2% 916,011
1998 TRE 42% Michael Fitzgerald* (D) 500,853 55.4% Joan Bolin (R) 390,054 43.1% 13,352 [+] 1.5% 904,259
1994 AG 45% Tom Miller (D) 509,045 53.3% Joseph Gunderson (R) 431,997 45.2% 13,781 [+] 1.4% 954,823
1994 AGR 44% Dale Cochran* (D) 491,342 52.6% Tom Cory (R) 399,693 42.8% 42,467 [+] 4.5% 933,502
1994 AUD 43% Richard Johnson* (R) 541,932 59.5% Dan Gray (D) 367,722 40.4% 495 0.1% 910,149
1994 LG 0% Joy Corning* (R) 0 0.0%       0 0.0% 0
1994 SOS 44% Paul Pate (R) 473,371 51.7% Anne Pedersen (D) 425,626 46.5% 16,165 [+] 1.8% 915,162
1994 TRE 44% Michael Fitzgerald* (D) 496,098 53.6% Jay Irwin (R) 404,722 43.7% 25,338 [+] 2.7% 926,158
1990 AG 44% Bonnie Campbell (D) 476,477 52.1% Ed Kelly (R) 437,644 47.8% 736 0.1% 914,857
1990 AGR 44% Dale Cochran* (D) 510,082 57.0% Varel Bailey (R) 369,084 41.2% 16,346 [+] 1.8% 895,512
1990 AUD 43% Richard Johnson* (R) 448,898 50.4% Beverly Dickerson (D) 440,798 49.5% 268 0.0% 889,964
1990 LG 0% Joy Corning (R) 0 0.0%       0 0.0% 0
1990 SOS 44% Elaine Baxter* (D) 471,888 52.3% Beverly Anderson (R) 430,162 47.7% 372 0.0% 902,422
1990 TRE 43% Michael Fitzgerald* (D) 525,874 58.8% Burtwin Day (R) 352,893 39.4% 15,947 [+] 1.8% 894,714
1986 AG 41% Tom Miller* (D) 545,653 64.4% James Davis (R) 295,203 34.9% 5,979 [+] 0.7% 846,835
1986 AGR 41% Dale Cochran (D) 440,409 53.0% Thatcher Johnson (R) 377,233 45.4% 13,188 [+] 1.6% 830,830
1986 AUD 40% Richard Johnson* (R) 419,088 50.7% Beverly Dickerson (D) 406,747 49.2% 73 0.0% 825,908
1986 LG 41% Jo Ann Zimmerman (D) 436,999 51.6% Joan Lipsky (R) 394,109 46.5% 16,507 [+] 1.9% 847,615
1986 SOS 40% Elaine Baxter (D) 420,487 51.0% Dawn Roberts (R) 403,676 49.0% 132 0.0% 824,295
1986 TRE 41% Michael Fitzgerald* (D) 480,636 57.8% Jack Nystrom (R) 350,549 42.2% 68 0.0% 831,253
1982 AG 47% Tom Miller* (D) 577,277 59.4% Walter Conlon (R) 388,284 40.0% 5,532 [+] 0.6% 971,093
1982 AGR 47% Robert Lounsberry* (R) 539,067 55.4% Jim Riordan (D) 428,154 44.0% 6,301 [+] 0.6% 973,522
1982 AUD 47% Richard Johnson* (R) 551,559 56.0% Tom Slockett (D) 429,938 43.6% 3,853 [+] 0.4% 985,350
1982 LG 47% Bob Anderson (D) 513,193 52.1% Lawrence Pope (R) 464,437 47.2% 7,331 [+] 0.7% 984,961
1982 SOS 47% Mary Jane O'Dell* (R) 547,390 55.9% Al Sorenson (D) 426,547 43.5% 6,119 [+] 0.6% 980,056
1982 TRE 46% Michael Fitzgerald (D) 494,705 51.5% Maurice Baringer* (R) 464,036 48.3% 2,774 [+] 0.3% 961,515
1978 AG 43% Tom Miller (D) 442,895 55.6% Richard Turner* (R) 351,251 44.1% 2,560 [+] 0.3% 796,706
1978 AGR 42% Robert Lounsberry* (R) 460,218 59.5% James Jordan (D) 309,702 40.1% 3,151 [+] 0.4% 773,071
1978 AUD 42% Lloyd Smith* (R) 446,604 58.0% John Brunow (D) 320,884 41.7% 2,935 [+] 0.4% 770,423
1978 LG 41% Terry Branstad (R) 430,587 57.7% William Palmer (D) 315,646 42.3% 0 0.0% 746,233
1978 SOS 40% Melvin Synhorst* (R) 401,085 54.3% Walter Griffin (D) 334,684 45.3% 2,362 [+] 0.3% 738,131
1978 TRE 41% Maurice Baringer* (R) 419,792 55.5% Bob Krause (D) 336,163 44.5% 17 0.0% 755,972
1974 AG 49% Richard Turner* (R) 458,196 52.2% Tom Miller (D) 419,270 47.8% 31 0.0% 877,497
1974 AGR 47% Robert Lounsberry* (R) 454,429 53.4% Francis York (D) 396,890 46.6% 32 0.0% 851,351
1974 AUD 47% Lloyd Smith* (R) 470,751 55.0% Harold Forrett (D) 384,439 45.0% 32 0.0% 855,222
1974 LG 49% Arthur Neu* (R) 479,117 54.5% Charles Miller (D) 393,445 44.7% 7,116 [+] 0.8% 879,678
1974 SOS 48% Melvin Synhorst* (R) 473,329 54.9% Cloyd Robinson (D) 388,200 45.1% 31 0.0% 861,560
1974 TRE 47% Maurice Baringer* (R) 425,702 50.2% Daniel Fitzgerald (D) 415,034 48.9% 7,988 [+] 0.9% 848,724
1972 AG 59% Richard Turner* (R) 623,037 54.4% James Reynolds (D) 522,324 45.6% 46 0.0% 1,145,407
1972 AGR 56% Robert Lounsberry (R) 579,242 53.4% Kenneth Owen (D) 506,184 46.6% 13 0.0% 1,085,439
1972 AUD 57% Lloyd Smith* (R) 668,158 61.0% Harold Forrett (D) 426,582 39.0% 6 0.0% 1,094,746
1972 LG 60% Arthur Neu (R) 605,191 52.3% William Gannon (D) 551,071 47.7% 0 0.0% 1,156,262
1972 SOS 59% Melvin Synhorst* (R) 659,830 58.1% Daryl Beall (D) 475,978 41.9% 3 0.0% 1,135,811
1972 TRE 58% Maurice Baringer* (R) 609,488 54.6% Albert Anderson (D) 506,184 45.4% 1 0.0% 1,115,673
1970 AG 42% Richard Turner* (R) 405,474 54.3% Ray Walton (D) 341,451 45.7% 5 0.0% 746,930
1970 AGR 42% L.B. Liddy* (R) 395,885 52.6% Kenneth Owen (D) 357,095 47.4% 4 0.0% 752,984
1970 AUD 42% Lloyd Smith* (R) 422,622 56.6% Donald Linduski (D) 323,510 43.4% 2 0.0% 746,134
1970 LG 43% Roger Jepsen* (R) 423,491 55.6% Minnette Doderer (D) 338,722 44.4% 0 0.0% 762,213
1970 SOS 42% Melvin Synhorst* (R) 437,920 58.3% Sharon Robinson (D) 313,510 41.7% 1 0.0% 751,431
1970 TRE 42% Maurice Baringer* (R) 401,295 54.5% William Palmer (D) 335,400 45.5% 0 0.0% 736,695
1968 AG 63% Richard Turner* (R) 596,302 55.2% Don Johnston (D) 482,376 44.6% 2,042 [+] 0.2% 1,080,720
1968 AGR 64% L.B. Liddy* (R) 604,065 55.5% Kenneth Owen (D) 483,396 44.4% 1,158 [+] 0.1% 1,088,619
1968 AUD 63% Lloyd Smith* (R) 618,400 57.3% Donald Kelly (D) 458,542 42.5% 1,377 [+] 0.1% 1,078,319
1968 LG 64% Roger Jepsen (R) 618,929 56.8% Andrew Frommelt (D) 469,556 43.1% 1,426 [+] 0.1% 1,089,911
1968 SOS 64% Melvin Synhorst* (R) 637,860 58.6% Robert Dodds (D) 449,290 41.3% 1,187 [+] 0.1% 1,088,337
1968 TRE 63% Maurice Baringer (R) 602,921 56.5% John Cruise (D) 463,691 43.5% 1 0.0% 1,066,613
1966 AG 50% Richard Turner (R) 428,209 50.4% Lawrence Scalise* (D) 417,587 49.2% 3,392 [+] 0.4% 849,188
1966 AGR 50% L.B. Liddy (R) 454,823 53.6% Kenneth Owen* (D) 391,521 46.1% 2,829 0.3% 849,173
1966 AUD 50% Lloyd Smith (R) 442,063 52.6% Lorne Worthington* (D) 398,577 47.4% 1 0.0% 840,641
1966 LG 50% Robert Fulton* (D) 424,968 49.9% Max Mills (R) 423,708 49.7% 3,099 [+] 0.4% 851,775
1966 SOS 50% Melvin Synhorst (R) 471,547 55.5% Michael Doyle (D) 375,173 44.2% 2,911 [+] 0.3% 849,631
1966 TRE 50% Paul Franzenburg* (D) 427,311 50.7% Dale Awtry (R) 412,666 49.0% 2,709 [+] 0.3% 842,686
1964 AG 65% Lawrence Scalise (D) 624,122 56.7% W.N. Bump (R) 474,841 43.1% 2,337 [+] 0.2% 1,101,300
1964 AGR 66% Kenneth Owen (D) 608,732 55.0% L.B. Liddy* (R) 497,514 45.0% 1 0.0% 1,106,247
1964 AUD 66% Lorne Worthington (D) 609,392 55.1% Chet Akers* (R) 493,396 44.7% 2,194 [+] 0.2% 1,104,982
1964 LG 67% Robert Fulton (D) 648,150 57.8% Bill Mooty* (R) 473,346 42.2% 0 0.0% 1,121,496
1964 SOS 66% Gary Cameron (D) 607,500 54.6% Melvin Synhorst* (R) 502,577 45.2% 2,362 [+] 0.2% 1,112,439
1964 TRE 66% Paul Franzenburg (D) 606,108 54.7% Merrill Abrahamson* (R) 502,460 45.3% 4 0.0% 1,108,572
1962 AG 46% Evan Hultman* (R) 428,682 55.9% Lawrence Scalise (D) 338,088 44.1% 0 0.0% 766,770
1962 AGR 46% L.B. Liddy (R) 418,555 54.0% Corbin Crawford (D) 356,693 46.0% 0 0.0% 775,248
1962 AUD 47% Chet Akers* (R) 424,373 54.3% Robert Conner (D) 356,814 45.7% 0 0.0% 781,187
1962 LG 47% Bill Mooty* (R) 403,845 51.4% Melvin Wolf (D) 381,574 48.6% 0 0.0% 785,419
1962 SOS 47% Melvin Synhorst* (R) 436,965 55.7% Delma Dever (D) 346,990 44.3% 0 0.0% 783,955
1962 TRE 47% Merrill Abrahamson* (R) 419,507 53.3% Roy Gillette (D) 367,982 46.7% 0 0.0% 787,489
1960 AG 71% Evan Hultman (R) 638,703 53.7% Don Wilson (D) 551,061 46.3% 0 0.0% 1,189,764
1960 AGR 72% Clyde Spry* (R) 645,336 53.7% Neel Hill (D) 556,076 46.3% 0 0.0% 1,201,412
1960 AUD 72% Chet Akers* (R) 638,727 53.4% Robert Hutte (R) 557,375 46.6% 0 0.0% 1,196,102
1960 LG 72% Bill Mooty (R) 636,796 53.0% John Hanson (D) 564,668 47.0% 0 0.0% 1,201,464
1960 SOS 72% Melvin Synhorst* (R) 658,942 54.9% Kenneth Robinson (D) 541,995 45.1% 0 0.0% 1,200,937
1960 TRE 72% Merrill Abrahamson* (R) 660,565 55.1% Conrad Lawlor (D) 537,242 44.9% 0 0.0% 1,197,807
*: incumbent               +: ran on additional party lines
Type: AG: Attorney General; AGR: Commissioner of Agriculture; AUD: Auditor; LG: Lt. Governor; SOS: Secretary of State; TRE: Treasurer
italics: special election

Voter Registration Data for Iowa

Click on the Year to display registration data in the map

YearTotalRepublicanDemocratOtherR/D EdgeR/D Edge %VAPOP %
2023 1,490,461 585,418 39.3% 468,773 31.5% 436,270 29.3% Rep +116,645 Rep +7.8% 61%
2022 1,878,691 687,710 36.6% 598,205 31.8% 592,776 31.6% Rep +89,505 Rep +4.8% 76%
2020 2,095,580 719,591 34.3% 699,001 33.4% 676,988 32.3% Rep +20,590 Rep +1.0% 85%
2018 2,013,108 649,944 32.3% 627,430 31.2% 735,734 36.5% Rep +22,514 Rep +1.1% 83%
2016 1,996,183 662,167 33.2% 629,081 31.5% 704,935 35.3% Rep +33,086 Rep +1.7% 83%
2014 1,937,024 620,083 32.0% 602,048 31.1% 714,893 36.9% Rep +18,035 Rep +0.9% 82%
2012 1,936,801 626,508 32.3% 621,401 32.1% 688,892 35.6% Rep +5,107 Rep +0.3% 83%
2010 1,984,993 618,614 31.2% 663,215 33.4% 703,164 35.4% Dem +44,601 Dem +2.2% 86%
2008 2,003,901 592,397 29.6% 698,839 34.9% 712,665 35.6% Dem +106,442 Dem +5.3% 87%
2006 1,931,912 589,477 30.5% 607,672 31.5% 734,763 38.0% Dem +18,195 Dem +0.9% 85%
2004 1,964,730 610,336 31.1% 605,934 30.8% 748,460 38.1% Rep +4,402 Rep +0.2% 88%
2002 1,809,824 582,303 32.2% 529,605 29.3% 697,916 38.6% Rep +52,698 Rep +2.9% 82%
2000 1,840,346 590,209 32.1% 565,561 30.7% 684,576 37.2% Rep +24,648 Rep +1.3% 84%
1994 1,631,126 586,781 36.0% 581,150 35.6% 463,195 28.4% Rep +5,631 Rep +0.3% 77%
1986 1,620,538 506,412 31.2% 571,972 35.3% 542,154 33.5% Dem +65,560 Dem +4.0% 78%
VAPOP% is the estimated percentage of voting age population that is registered.
Registration data may include "inactive" voters.   Data for each year pertains to the November elections.

Partisan Legislative Composition for Iowa

YearU.S. House
RepDemOther
2022 4 0 0
2020 3 1 0
2018 1 3 0
2016 3 1 0
2014 3 1 0
2012 2 2 0
2010 2 3 0
2008 2 3 0
2006 2 3 0
2004 4 1 0
2002 4 1 0
2000 4 1 0
1998 4 1 0
1996 4 1 0
1994 5 0 0
1992 4 1 0
1990 4 2 0
1988 4 2 0
1986 4 2 0
1984 4 2 0
1982 3 3 0
1980 3 3 0
1978 3 3 0
1976 2 4 0
1974 1 5 0
1972 3 3 0
1970 5 2 0
1968 5 2 0
1966 5 2 0
1964 1 6 0
1962 6 1 0
1960 6 2 0
1958 4 4 0
1956 7 1 0
1954 8 0 0
1952 8 0 0
1950 8 0 0
1948 8 0 0
1946 8 0 0
1944 8 0 0
1942 8 0 0
1940 7 2 0
1938 7 2 0
1936 4 5 0
YearState Senate
RepDemOther
2022 34 16 0
2020 32 18 0
2018 32 18 0
2016 29 20 1
2014 24 26 0
2012 24 26 0
2010 24 26 0
2008 18 32 0
2006 20 30 0
2004 25 25 0
2002 29 21 0
2000 30 20 0
1998 30 20 0
1996 29 21 0
1994 23 27 0
1992 24 26 0
1990 22 28 0
1988 20 30 0
1986 20 30 0
1984 21 29 0
1982 22 28 0
1980 29 21 0
1978 28 22 0
1976 24 26 0
1974 24 26 0
1972 28 22 0
1970 38 12 0
1968 44 17 0
1966 29 32 0
1964 25 34 0
1962 38 12 0
1960 35 15 0
1958 33 17 0
1956 40 10 0
1954 44 6 0
1952 46 4 0
1950 41 9 0
1948 43 7 0
1946 44 6 0
1944 45 5 0
1942 45 5 0
1940 45 5 0
1938 38 12 0
1936 22 28 0
YearState House
RepDemOther
2022 64 36 0
2020 [1] 59 41 0
2018 53 47 0
2016 59 41 0
2014 57 43 0
2012 53 46 0
2010 60 40 0
2008 43 57 0
2006 46 54 0
2004 51 49 0
2002 54 46 0
2000 56 44 0
1998 56 44 0
1996 54 46 0
1994 64 36 0
1992 51 49 0
1990 47 53 0
1988 39 61 0
1986 42 58 0
1984 40 60 0
1982 40 60 0
1980 58 42 0
1978 57 43 0
1976 41 59 0
1974 39 61 0
1972 57 43 0
1970 63 37 0
1968 86 38 0
1966 89 35 0
1964 23 101 0
1962 78 30 0
1960 78 30 0
1958 58 50 0
1956 71 37 0
1954 90 18 0
1952 105 3 0
1950 93 15 0
1948 79 29 0
1946 98 10 0
1944 91 17 0
1942 98 10 0
1940 87 21 0
1938 89 19 0
1936 [2] 54 54 0
The partisan breakdowns shown are ones which took effect following the general elections in the specified year.

[1] Jon Dunwell won a special election in the 29th district on October 12, 2021, flipping it from Democratic to Republican (60 R, 40 D).
[2] A Republican voted with the Democrats to elect a Democratic Speaker, LaMar Foster. Democrats were thus able to organize and control the House.

Source for state legislature data and notations: Wikipedia