How Iowa has voted in every presidential election since 1976

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January 20, 2021
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How Iowa has voted in every presidential election since 1976

It is often said that the best predictor of future behavior is past behavior. When it comes to elections, that is true—but it's not true often enough that we know what to expect at the ballot box.

Stacker takes a look at how Iowa voted in each election since 1976, according to data from MIT Election Data and Science Lab.

States like Hawaii and Rhode Island have been Democratic strongholds for decades, Massachusetts has been voting steadily blue since 1960, and Washington D.C. has never backed a Republican candidate.

On the other side of the political aisle, Alaska has voted Republican in every election but one. Idaho, Kentucky, and Indiana have been Republican for generations, while Nebraska, Oklahoma, South Dakota, Montana, and Wyoming have been voting red nearly every chance they can.

Southern states have been moving as a powerful block for ages, voting Democratic from the Reconstruction after the Civil War until the 1960s, when Southerners opposed civil rights legislation. The Republican Party stepped in with what's known as its Southern strategy to woo those votes, adding an emphasis on the traditional nuclear family, traditional roles for women, and evangelical religion to simmering racial issues.

1976

Iowa
- #1. Gerald Ford (Republican): 49.5% of votes (1.0% margin of victory)
- #2. Jimmy Carter (Democrat): 48.5%
- #3. Eugene McCarthy (Independent): 1.6%
- #4. Thomas J. Anderson (American Party Of Iowa): 0.2%

National
- #1. Jimmy Carter (Democrat): 50.1% of votes (297/538 electoral votes)
- #2. Gerald Ford (Republican): 48.0%
- States with smallest margin of victory: Oregon (+0.2% Gerald Ford), Ohio (+0.2% Jimmy Carter), Maine (+0.8% Gerald Ford)

1980

Iowa
- #1. Ronald Reagan (Republican): 51.3% of votes (12.7% margin of victory)
- #2. Jimmy Carter (Democrat): 38.6%
- #3. John B. Anderson (Nominated By Petition): 8.8%
- #4. Edward Clark (Libertarian): 1.0%

National
- #1. Ronald Reagan (Republican): 50.8% of votes (489/538 electoral votes)
- #2. Jimmy Carter (Democrat): 41.0%
- States with smallest margin of victory: Massachusetts (+0.2% Ronald Reagan), Tennessee (+0.3% Ronald Reagan), Arkansas (+0.6% Ronald Reagan)

1984

Iowa
- #1. Ronald Reagan (Republican): 53.3% of votes (7.4% margin of victory)
- #2. Walter Mondale (Democrat): 45.9%
- #3. Lyndon Larouche Jr. (Independent): 0.5%
- #4. David Bergland (Libertarian): 0.1%

National
- #1. Ronald Reagan (Republican): 58.8% of votes (525/538 electoral votes)
- #2. Walter Mondale (Democrat): 40.6%
- States with smallest margin of victory: Minnesota (+0.2% Walter Mondale), Massachusetts (+2.8% Ronald Reagan), Rhode Island (+3.6% Ronald Reagan)

1988

Iowa
- #1. Michael Dukakis (Democrat): 54.7% of votes (10.2% margin of victory)
- #2. George H.W. Bush (Republican): 44.5%
- #3. Lyndon Larouche Jr. (Nominated By Petition): 0.3%
- #4. Ron Paul (Libertarian): 0.2%

National
- #1. George H. W. Bush (Republican): 53.4% of votes (426/538 electoral votes)
- #2. Michael Dukakis (Democrat): 45.7%
- States with smallest margin of victory: Washington (+1.6% Michael Dukakis), Illinois (+2.1% George H.W. Bush), Pennsylvania (+2.3% George H.W. Bush)

1992

Iowa
- #1. Bill Clinton (Democrat): 43.3% of votes (6.0% margin of victory)
- #2. George H.W. Bush (Republican): 37.3%
- #3. Ross Perot (Independent): 18.7%
- #4. John Hagelin (Natural Law): 0.2%

National
- #1. Bill Clinton (Democrat): 43.0% of votes (370/538 electoral votes)
- #2. George H. W. Bush (Republican): 37.5%
- States with smallest margin of victory: Georgia (+0.6% Bill Clinton), North Carolina (+0.8% George H.W. Bush), New Hampshire (+1.2% Bill Clinton)

1996

Iowa
- #1. Bill Clinton (Democrat): 50.3% of votes (10.3% margin of victory)
- #2. Robert Dole (Republican): 39.9%
- #3. Ross Perot (Reform Party): 8.5%
- #4. Ralph Nader (Green): 0.5%

National
- #1. Bill Clinton (Democrat): 49.2% of votes (379/538 electoral votes)
- #2. Bob Dole (Republican): 40.7%
- States with smallest margin of victory: Kentucky (+1.0% Bill Clinton), Nevada (+1.0% Bill Clinton), Georgia (+1.2% Robert Dole)

2000

Iowa
- #1. Al Gore (Democrat): 47.2% of votes (0.3% margin of victory)
- #2. George W. Bush (Republican): 46.9%
- #3. Ralph Nader (Green): 2.2%
- #4. Patrick ""Pat"" Buchanan (Reform Party): 0.4%

National
- #1. George W. Bush (Republican): 47.9% of votes (271/538 electoral votes)
- #2. Al Gore (Democrat): 48.4%
- States with smallest margin of victory: Florida (+0.0% George W. Bush), New Mexico (+0.1% Al Gore), Wisconsin (+0.2% Al Gore)

2004

Iowa
- #1. George W. Bush (Republican): 49.9% of votes (0.7% margin of victory)
- #2. John Kerry (Democrat): 49.2%
- #3. Michael Badnarik (Libertarian): 0.2%
- #4. Michael Peroutka (Constitution Party): 0.1%

National
- #1. George W. Bush (Republican): 50.7% of votes (286/538 electoral votes)
- #2. John Kerry (Democrat): 48.3%
- States with smallest margin of victory: Wisconsin (+0.4% John Kerry), Iowa (+0.7% George W. Bush), New Mexico (+0.8% George W. Bush)

2008

Iowa
- #1. Barack Obama (Democrat): 53.9% of votes (9.5% margin of victory)
- #2. John Mccain (Republican): 44.4%
- #3. Ralph Nader (Peace & Freedom): 0.5%
- #4. Bob Barr (Libertarian): 0.3%

National
- #1. Barack Obama (Democrat): 52.9% of votes (365/538 electoral votes)
- #2. John McCain (Republican): 45.7%
- States with smallest margin of victory: Missouri (+0.1% John Mccain), North Carolina (+0.3% Barack Obama), Indiana (+1.0% Barack Obama)

2012

Iowa
- #1. Barack Obama (Democrat): 52.0% of votes (5.8% margin of victory)
- #2. Mitt Romney (Republican): 46.2%
- #3. Gary Johnson (Libertarian): 0.8%
- #4. Jill Stein (Green): 0.2%

National
- #1. Barack Obama (Democrat): 51.1% of votes (332/538 electoral votes)
- #2. Mitt Romney (Republican): 47.2%
- States with smallest margin of victory: Florida (+0.9% Barack Obama), North Carolina (+2.0% Mitt Romney), Ohio (+3.0% Barack Obama)

2016

Iowa
- #1. Donald Trump (Republican): 51.2% of votes (9.4% margin of victory)
- #2. Hillary Clinton (Democrat): 41.8%
- #3. Gary Johnson (Libertarian): 3.8%
- #4. Evan Mcmullin (Nominated By Petition): 0.8%

National
- #1. Donald Trump (Republican): 46.1% of votes (304/538 electoral votes)
- #2. Hillary Clinton (Democrat): 48.2%
- States with smallest margin of victory: Michigan (+0.2% Donald Trump), New Hampshire (+0.4% Hillary Clinton), Pennsylvania (+0.7% Donald Trump)

2020

Iowa
- #1. Donald Trump (Republican): 52.8% of votes (8.2% margin of victory)
- #2. Joe Biden (Democrat): 44.6%
- #3. Jo Jorgensen (Libertarian): 1.2%
- #4. Kanye West (Independent): 0.2%

National
- #1. Joe Biden (Democrat): 51.3% of votes (306/538 electoral votes)
- #2. Donald Trump (Republican): 46.9%
- States with smallest margin of victory: Georgia (+0.2% Joe Biden), Arizona (+0.3% Joe Biden), Wisconsin (+0.6% Joe Biden)

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