Iowa presidential election results and history

Iowa has voted in 45 presidential elections in this record and backed the national winner in 33 of the 45 with a recorded winner (73%).

Current members of Congress from Iowa (6)

Joni Ernst Senator · Republican
Chuck Grassley Senator · Republican
Mariannette Miller-Meeks District 1 · Republican
Ashley Hinson District 2 · Republican
Zachary Nunn District 3 · Republican
Randy Feenstra District 4 · Republican

Latest (2024): Donald J. Trump13.2 pts
Electoral votes: 6
Republican wins: 32
Democratic wins: 13

Iowa, Republican vs Democratic margin since 1856: Republican minus Democratic share, in points. Bars above the line lean Republican, below lean Democratic.

Counties in 2024

Full 2024 results

Every presidential election in Iowa

Download CSV

Year	Carried by	Share	Runner-up	Margin	EV	Votes counted	National winner
2024	Donald J. Trump	55.7%	Kamala Harris	13.2	6	1,663,506	Donald J. Trump ✓
2020	Donald J. Trump	53.1%	Joseph R. Biden	8.2	6	1,690,871	Joseph R. Biden ✗
2016	Donald J. Trump	51.1%	Hillary Clinton	9.4	6	1,566,031	Donald J. Trump ✓
2012	Barack Obama	52.0%	Mitt Romney	5.8	6	1,582,180	Barack Obama ✓
2008	Barack Obama	53.7%	John McCain	9.5	7	1,543,662	Barack Obama ✓
2004	George W. Bush	49.9%	John Kerry	0.7	7	1,506,908	George W. Bush ✓
2000	Albert Gore, Jr.	48.5%	George W. Bush	0.3	7	1,315,563	George W. Bush ✗
1996	William J. Clinton	50.3%	Robert Dole	10.3	7	1,234,075	William J. Clinton ✓
1992	William J. Clinton	43.3%	George H. W. Bush	6.0	7	1,354,607	William J. Clinton ✓
1988	Michael Dukakis	54.7%	George H. W. Bush	10.2	8	1,225,614	George H. W. Bush ✗
1984	Ronald Reagan	53.3%	Walter Mondale	7.4	8	1,319,805	Ronald Reagan ✓
1980	Ronald Reagan	51.3%	Jimmy Carter	12.7	8	1,317,661	Ronald Reagan ✓
1976	Gerald R. Ford	49.5%	Jimmy Carter	1.0	8	1,279,306	Jimmy Carter ✗
1972	Richard M. Nixon	57.6%	George McGovern	17.1	8	1,225,944	Richard M. Nixon ✓
1968	Richard M. Nixon	53.0%	Hubert Humphrey	12.2	9	1,167,931	Richard M. Nixon ✓
1964	Lyndon B. Johnson	61.9%	Barry Goldwater	24.0	9	1,184,539	Lyndon B. Johnson ✓
1960	Richard M. Nixon	56.7%	John F. Kennedy	13.5	10	1,273,810	John F. Kennedy ✗
1956	Dwight D. Eisenhower	59.1%	Adlai Stevenson	18.4	10	1,234,564	Dwight D. Eisenhower ✓
1952	Dwight D. Eisenhower	63.8%	Adlai Stevenson	28.2	10	1,268,773	Dwight D. Eisenhower ✓
1948	Harry S Truman	50.3%	Thomas E. Dewey	2.7	10	1,038,264	Harry S Truman ✓
1944	Thomas E. Dewey	52.0%	Franklin D. Roosevelt	4.5	10	1,052,599	Franklin D. Roosevelt ✗
1940	Wendell L. Willkie	52.0%	Franklin D. Roosevelt	4.4	11	1,215,432	Franklin D. Roosevelt ✗
1936	Franklin D. Roosevelt	54.4%	Alfred M. Landon	11.7	11	1,142,737	Franklin D. Roosevelt ✓
1932	Franklin D. Roosevelt	57.7%	Herbert Hoover	17.7	11	1,036,687	Franklin D. Roosevelt ✓
1928	Herbert Hoover	61.8%	Alfred E. Smith	24.2	13	1,009,189	Herbert Hoover ✓
1924	Calvin Coolidge	55.0%	Robert LaFollette	26.9	13	976,770	Calvin Coolidge ✓
1920	Warren G. Harding	70.9%	James M. Cox	45.5	13	894,959	Warren G. Harding ✓
1916	Charles E. Hughes	54.1%	Woodrow Wilson	11.3	13	518,738	Woodrow Wilson ✗
1912	Woodrow Wilson	37.6%	Theodore Roosevelt	4.8	13	492,353	Woodrow Wilson ✓
1908	William Howard Taft	55.6%	William Jennings Bryan	15.1	13	494,770	William Howard Taft ✓
1904	Theodore Roosevelt	63.4%	Alton B. Parker	32.7	13	485,703	Theodore Roosevelt ✓
1900	William McKinley	58.0%	William Jennings Bryan	18.6	13	530,345	William McKinley ✓
1896	William McKinley	55.5%	William Jennings Bryan	12.6	13	521,550	William McKinley ✓
1892	Benjamin Harrison	49.6%	Grover Cleveland	5.3	13	443,159	Grover Cleveland ✗
1888	Benjamin Harrison	52.3%	Grover Cleveland	7.8	13	404,694	Benjamin Harrison ✓
1884	James G. Blaine	50.1%	Grover Cleveland	5.0	13	393,542	Grover Cleveland ✗
1880	James A. Garfield	56.9%	Winfield S. Hancock	24.2	11	323,140	James A. Garfield ✓
1876	Rutherford B. Hayes	58.4%	Samuel Tilden	20.2	11	293,398	Rutherford B. Hayes ✓
1872	Ulysses S. Grant	60.8%	Horace Greeley	27.9	11	216,365	Ulysses S. Grant ✓
1868	Ulysses S. Grant	61.9%	Horatio Seymour	23.8	8	194,439	Ulysses S. Grant ✓
1864	Abraham Lincoln	64.1%	George McClellan	28.2	8	138,025	Abraham Lincoln ✓
1860	Abraham Lincoln	54.9%	Stephen Douglas	11.9	4	128,331	Abraham Lincoln ✓
1856	John C. Fremont	48.8%	James Buchanan	8.1	4	92,310	James Buchanan ✗
1852	Franklin Pierce	50.2%	Winfield Scott	5.4	4	35,364	Franklin Pierce ✓
1848	Lewis Cass	50.5%	Zachary Taylor	5.9	4	22,271	Zachary Taylor ✗

Counties

Questions and answers

How has Iowa voted in recent presidential elections?

2024: Donald J. Trump by 13.2 points; 2020: Donald J. Trump by 8.2 points; 2016: Donald J. Trump by 9.4 points; 2012: Barack Obama by 5.8 points; 2008: Barack Obama by 9.5 points.

When did Iowa last vote Democratic for president?

In 2012, for Barack Obama.

When did Iowa last vote Republican for president?

In 2024, for Donald J. Trump.

How often does Iowa vote for the winning presidential candidate?

Iowa backed the national winner in 33 of 45 elections in this record (73%).

Is Iowa a swing state?

Not usually. It leans clearly to one party: in 2012, 2016, 2020 and 2024 its margins were Democratic by 5.8 points, Republican by 9.4 points, Republican by 8.2 points and Republican by 13.2 points.

Official results As published by The American Presidency Project (UC Santa Barbara) and the state documents it links. How we use this data