The 2024 United States presidential election in Iowa was held on Tuesday, November 5, 2024, as part of the 2024 United States presidential election in which all 50 states plus the District of Columbia participated. Iowa voters chose electors to represent them in the Electoral College via a popular vote. The state of Iowa has six electoral votes in the Electoral College, following reapportionment due to the 2020 United States census in which the state neither gained nor lost a seat.
For most of the race, Iowa was expected to be a safe red state, though a poll performed by Selzer and Co. and published by The Des Moines Register on November 2 claimed Harris to be up by 3%, leading some to predict a far closer race than initially expected. Nonetheless, Democrats did not seriously contest the state.
In the election, Donald Trump won the state in a landslide, winning the state by 13.2 percentage points, the widest margin for any candidate since 1972. This was the first time a Republican won the state by double digits since 1980, and the first time any presidential nominee had done so since 1996.
Caucuses Democratic caucuses
During the Iowa Democratic caucuses, in-person caucusing focusing only on party business was held on January 15. Voting on candidates was done exclusively via mail-in ballots from January 12 until Super Tuesday, March 5, 2024. This was the result of a compromise between the Iowa Democratic Party and the Democratic National Committee (DNC). Iowa traditionally holds its race first during the presidential primary and caucuses season, but the DNC originally wanted South Carolina to instead hold its race first on February 3.
Republican caucuses
The Iowa Republican caucuses were held on January 15, 2024, the first-in-the-nation nomination contest of the 2024 Republican primaries. Former president Donald Trump won the primary with the largest margin of victory for a non-incumbent in the Iowa caucuses. Trump's overwhelming victory in the state established his position early as the frontrunner.
Libertarian caucuses
The Iowa Libertarian caucuses were held on January 15, 2024, its first as a recognized party in the state. 2022 U.S. Senate candidate Chase Oliver from Georgia won the non-binding preferential vote with 42.7% of the vote.
2024 Iowa Libertarian presidential caucusesCandidateVotesPercentage 38 42.70 15 16.85 12 13.48 12 13.48 4 4.49 2 2.25 2 2.25 1 1.12 1 1.12 1 1.12 None of the above 1 1.12 Total 89 100.00
General election
Predictions SourceRankingAs of The Cook Political Report November 4, 2024 Inside Elections November 4, 2024 Sabato's Crystal Ball November 4, 2024 Decision Desk HQ/The Hill November 3, 2024 CNalysis November 4, 2024 CNN November 3, 2024 The Economist November 3, 2024538 November 3, 2024 NBC News November 3, 2024 Split Ticket November 2, 2024
Polling Donald Trump vs. Kamala Harris
Aggregate polls Source of pollaggregationDatesadministeredDatesupdatedKamalaHarrisDonaldTrump Other /UndecidedMargin270ToWinOctober 2 – November 4, 2024November 4, 202445.3%50.0%4.7%Trump +4.7%Silver Bulletinthrough November 3, 2024November 4, 202445.4%49.8%4.8%Trump +4.4%Average45.4%49.9%4.7%Trump +4.5%
Poll source Date(s)administered Samplesize Marginof error DonaldTrump KamalaHarris Other /UndecidedInsiderAdvantage (R)November 2–3, 2024800 (LV)± 3.5%52%46%2%SoCal Strategies (R)November 2–3, 2024501 (RV)± 4.4%50%43%7%435 (LV)52%44%4%Emerson CollegeNovember 1–2, 2024800 (LV)± 3.4%53%43%4%54%45%1%Cygnal (R)September 27–28, 2024600 (LV)± 4.0%51%45%4%
Donald Trump vs. Kamala Harris vs. Robert F. Kennedy Jr. vs. Chase Oliver Poll source Date(s)administered Samplesize Marginof error DonaldTrump KamalaHarris Robert F.Kennedy Jr. ChaseOliver Other /UndecidedSelzer & Co.October 28–31, 2024808 (LV)± 3.4%44%47%3%0%6%Selzer & Co.September 8–11, 2024656 (LV)± 3.8%47%43%6%1%3%
Donald Trump vs. Joe Biden
Poll source Date(s)administered Samplesize Marginof error DonaldTrump JoeBiden Other /UndecidedCygnal (R)July 8–9, 2024600 (LV)± 4.0%51%39%10%John Zogby StrategiesApril 13–21, 2024405 (LV)–47%45%8%Selzer & Co.February 25–28, 2024640 (LV)± 3.9%48%33%19%Cygnal (R)February 13–14, 2024600 (LV)± 3.9%49%40%11%John Zogby StrategiesJanuary 2–4, 2024500 (LV)–51%39%10%Emerson CollegeDecember 15–17, 20231,094 (RV)± 2.9%48%40%12%Emerson CollegeOctober 1–4, 2023464 (RV)± 4.5%44%34%22%Cygnal (R)September 28–29, 2023506 (LV)± 4.3%47%38%15%Emerson CollegeSeptember 7–9, 2023896 (RV)± 3.2%50%39%11%HarrisXAugust 17–21, 20231,952 (LV)–47%41%12%Big Data Poll (R)July 9–12, 20231,057 (LV)± 3.0%42%36%22%Emerson CollegeMay 19–22, 20231,064 (RV)± 2.9%49%38%13%Cygnal (R)April 3–4, 2023600 (LV)± 4.0%46%40%14%Emerson CollegeOctober 2–4, 2022959 (LV)± 3.1%47%39%14%Cygnal (R)October 2–4, 2022600 (LV)± 4.0%51%41%8%Cygnal (R)July 13–14, 2022600 (LV)± 4.0%51%40%9%Cygnal (R)February 20–22, 2022610 (LV)± 3.9%53%38%9%Selzer & Co.November 7–10, 2021658 (LV)± 3.8%51%40%9%Cygnal (R)October 18–19, 2021600 (LV)± 4.0%54%41%5%
Donald Trump vs. Joe Biden vs. Robert F. Kennedy Jr. vs. Chase Oliver Poll source Date(s)administered Samplesize Marginof error DonaldTrump JoeBiden Robert F.Kennedy Jr. ChaseOliver Other /UndecidedSelzer & Co.June 9–14, 2024632 (LV)± 3.9%50%32%9%2%7%
Donald Trump vs. Joe Biden vs. Cornel West Poll source Date(s)administered Samplesize Marginof error DonaldTrump JoeBiden CornelWest Other /UndecidedEmerson CollegeSeptember 7–9, 2023896 (RV)± 3.2%48%35%5%12%
Donald Trump vs. Gavin Newsom
Poll source Date(s)administered Samplesize Marginof error DonaldTrump GavinNewsom Other /UndecidedCygnal (R)September 28–29, 2023506 (LV)± 4.3%48%34%18%
Donald Trump vs. Robert F. Kennedy Jr. Poll source Date(s)administered Samplesize Marginof error DonaldTrump RobertKennedy Jr. Other /UndecidedJohn Zogby StrategiesApril 13–21, 2024405 (LV)–39%45%16%
Robert F. Kennedy Jr. vs. Joe Biden Poll source Date(s)administered Samplesize Marginof error RobertKennedy Jr. JoeBiden Other /UndecidedJohn Zogby StrategiesApril 13–21, 2024405 (LV)–50%39%11%
Ron DeSantis vs. Joe Biden
Poll source Date(s)administered Samplesize Marginof error RonDeSantis JoeBiden Other /UndecidedBig Data Poll (R)July 9–12, 20231,057 (LV)± 3.0%38%36%26%Emerson CollegeMay 19–22, 20231,064 (RV)± 2.9%45%38%17%Cygnal (R)April 3–4, 2023600 (LV)± 4.0%48%38%14%
Generic Republican vs. Joe Biden
Poll source Date(s)administered Samplesize Marginof error GenericRepublican JoeBiden Other /UndecidedCygnal (R)September 28–29, 2023506 (LV)± 4.3%49%33%18%
Results
By county CountyDonald TrumpRepublicanKamala HarrisDemocraticVarious candidatesOther partiesMarginTotal#%#%#%#%Adair2,91671.47%1,08626.62%781.91%1,83044.85%4,080Adams1,51771.05%57626.98%421.97%94144.07%2,135Allamakee4,85766.37%2,35032.11%1111.52%2,50734.26%7,318Appanoose4,70472.55%1,68626.00%941.45%3,01846.55%6,484Audubon2,21468.14%97029.86%652.00%1,24438.28%3,249Benton9,54965.81%4,73932.66%2211.52%4,81033.15%14,509Black Hawk30,57248.60%31,29949.76%1,0351.65%-727-1.16%62,906Boone9,19959.72%5,89538.27%3092.01%3,30421.45%15,403Bremer8,79960.24%5,57138.14%2371.62%3,22822.10%14,607Buchanan6,79063.16%3,76635.03%1941.80%3,02428.13%10,750Buena Vista4,96265.84%2,46232.67%1131.50%2,50033.17%7,537Butler5,78471.89%2,14426.65%1181.47%3,64045.24%8,046Calhoun3,70872.75%1,32826.05%611.20%2,38046.70%5,097Carroll7,81470.14%3,15328.30%1731.55%4,66141.84%11,140Cass5,00769.38%2,07728.78%1331.84%2,93040.60%7,217Cedar6,39060.03%4,07538.28%1791.68%2,31521.75%10,644Cerro Gordo12,62754.85%9,95543.25%4381.90%2,67211.60%23,020Cherokee4,39872.04%1,61126.39%961.57%2,78745.65%6,105Chickasaw4,23467.86%1,91930.76%861.38%2,31537.10%6,239Clarke3,14070.10%1,26528.24%741.65%1,87541.86%4,479Clay6,04770.80%2,36727.71%1271.49%3,68043.09%8,541Clayton6,25566.54%3,01732.10%1281.36%3,23834.44%9,400Clinton13,96458.48%9,47239.67%4421.85%4,49218.81%23,878Crawford4,65171.06%1,81227.69%821.25%2,83943.37%6,545Dallas32,37451.42%29,40246.70%1,1851.88%2,9724.72%62,961Davis3,02776.56%87822.21%491.24%2,14954.35%3,954Decatur2,71172.51%95725.60%711.90%1,75446.91%3,739Delaware6,98468.89%2,97829.37%1761.74%4,00639.52%10,138Des Moines10,79456.65%7,93541.64%3251.71%2,85915.01%19,054Dickinson7,77569.21%3,29729.35%1621.44%4,47839.86%11,234Dubuque28,22453.48%23,70544.92%8411.59%4,5198.56%52,770Emmet3,42271.32%1,31527.41%611.27%2,10743.91%4,798Fayette6,32564.23%3,33433.85%1891.92%2,99130.38%9,848Floyd4,74462.01%2,78236.37%1241.62%1,96225.64%7,650Franklin3,43170.02%1,39328.43%761.55%2,03841.59%4,900Fremont2,71171.44%1,02326.96%611.61%1,68844.48%3,795Greene3,21165.79%1,60332.84%671.37%1,60832.95%4,881Grundy4,99869.94%2,01928.25%1291.81%2,97941.69%7,146Guthrie4,44667.95%1,97430.17%1231.88%2,47237.78%6,543Hamilton5,00465.87%2,48232.67%1111.46%2,52233.20%7,597Hancock4,33673.01%1,52325.64%801.35%2,81347.37%5,939Hardin5,79068.44%2,55330.18%1171.38%3,23738.26%8,460Harrison5,56669.93%2,24528.21%1481.86%3,32141.72%7,959Henry6,43967.07%2,99531.20%1661.73%3,44435.87%9,600Howard3,15765.09%1,61933.38%741.53%1,53831.71%4,850Humboldt3,77074.17%1,23624.32%771.51%2,53449.85%5,083Ida2,77175.81%82622.60%581.59%1,94553.21%3,655Iowa6,06862.95%3,40035.27%1711.77%2,66827.68%9,639Jackson7,07465.49%3,56733.02%1601.48%3,50732.47%10,801Jasper12,70162.88%7,14135.35%3561.76%5,56027.53%20,198Jefferson4,35352.16%3,78845.39%2052.46%5656.77%8,346Johnson26,08730.11%58,84667.92%1,7111.97%-32,759-37.81%86,644Jones6,82062.11%3,94235.90%2181.99%2,87826.21%10,980Keokuk3,86975.13%1,21923.67%621.20%2,65051.46%5,150Kossuth5,98371.25%2,28427.20%1301.55%3,69944.05%8,397Lee10,15262.67%5,65934.94%3872.39%4,49327.73%16,198Linn54,23744.11%66,35853.97%2,3641.92%-12,121-9.86%122,959Louisa3,58469.70%1,48028.78%781.52%2,10440.92%5,142Lucas3,40073.18%1,16925.16%771.66%2,23148.02%4,646Lyon5,89984.25%1,02314.61%801.14%4,87669.64%7,002Madison6,86468.45%3,00830.00%1561.56%3,85638.45%10,028Mahaska8,20774.98%2,57723.54%1621.48%5,63051.44%10,946Marion13,28967.92%5,92830.30%3491.78%7,36137.62%19,566Marshall9,81556.83%7,13441.31%3211.86%2,68115.52%17,270Mills5,67168.71%2,45629.76%1261.53%3,21538.95%8,253Mitchell3,73664.74%1,94333.67%921.59%1,79331.07%5,771Monona3,33171.84%1,23626.66%701.51%2,09545.18%4,637Monroe3,10474.65%1,00224.10%521.25%2,10250.55%4,158Montgomery3,48668.70%1,50829.72%801.58%1,97838.98%5,074Muscatine11,15256.46%8,21241.58%3881.96%2,94014.88%19,752O'Brien5,99879.71%1,42818.98%991.32%4,57060.73%7,525Osceola2,62381.23%55517.19%511.58%2,06864.04%3,229Page5,15370.38%2,06028.13%1091.49%3,09342.25%7,322Palo Alto3,57671.78%1,33826.86%681.36%2,23844.92%4,982Plymouth10,66176.31%3,10422.22%2061.47%7,55754.09%13,971Pocahontas2,72776.13%79622.22%591.65%1,93153.91%3,582Polk112,24043.70%140,07554.54%4,5231.76%-27,835-10.84%256,838Pottawattamie26,33559.10%17,46839.20%7561.70%8,86719.90%44,559Poweshiek5,75857.51%4,06740.62%1881.88%1,69116.89%10,013Ringgold2,01575.02%63823.75%331.23%1,37751.27%2,686Sac4,10075.09%1,28923.61%711.30%2,81151.48%5,460Scott45,97651.01%42,47947.13%1,6781.86%3,4973.88%90,133Shelby4,60070.71%1,81127.84%941.45%2,78942.87%6,505Sioux16,05384.49%2,62613.82%3221.69%13,42770.67%19,001Story21,66543.74%26,76554.04%1,0962.21%-5,100-10.30%49,526Tama5,37962.43%3,07035.63%1671.94%2,30926.80%8,616Taylor2,38177.28%66621.62%341.10%1,71555.66%3,081Union4,04467.25%1,87431.17%951.58%2,17036.08%6,013Van Buren2,78576.83%77821.46%621.71%2,00755.37%3,625Wapello9,47965.00%4,89633.57%2081.43%4,58331.43%14,583Warren19,48659.40%12,71238.75%6061.85%6,77420.65%32,804Washington7,11961.43%4,29737.08%1721.48%2,82224.35%11,588Wayne2,42677.66%64320.58%551.76%1,78357.08%3,124Webster10,85064.78%5,64133.68%2571.53%5,20931.10%16,748Winnebago3,63664.45%1,90933.84%971.72%1,72730.61%5,642Winneshiek6,42753.65%5,32144.42%2311.93%1,1069.23%11,979Woodbury25,96960.50%16,14537.62%8071.88%9,82422.88%42,921Worth2,71563.33%1,50835.18%641.49%1,20728.15%4,287Wright3,85367.32%1,77030.93%1001.75%2,08336.39%5,723Totals927,01955.73%707,27842.52%29,2091.76%219,74113.21%1,663,506