US Elections
Results, margins, swing and turnout for president, Congress, governors and states
2024 Iowa 1st Congressional District election results
Mariannette Millermeeks (R) won the 2024 Iowa 1st Congressional District race with 50.0% of the vote, ahead of Christina Bohannan (D) with 49.8%: a margin of 0.2 points (799 votes). It was one of the closest races of 2024: 799 votes separated the top two. Compared with 2022, the margin moved 6.6 points toward Democrats. 414,078 votes were counted.
Coverage: president, U.S. Senate and U.S. House (by district) 1976 to 2024, and county results of the presidential race 2000 to 2024. County, district and city results for all other races 2016 to 2024. Years or levels that are not loaded are not estimated. Local offices such as city councils and school boards are not included. City results (2016 to 2024, president, Senate, House and governor) are added up from precinct results; where a precinct crosses the city line its votes are split by population, so those numbers are estimates.
Certified US election results with margins, swing against the previous comparable race, turnout and partisan lean. The margin is the Republican share minus the Democratic share of all votes: R+ is a Republican lead, D+ a Democratic lead. Election-night rows marked unofficial are counts that are still changing.
About this race
2024 U.S. House, Iowa district 1: results, margin and map
Mariannette Millermeeks won with 50.0% of the vote (206,955 votes), ahead of Christina Bohannan with 49.8% (206,156 votes).
Frequently asked questions
Who won the 2024 U.S. House, Iowa district 1?
Mariannette Millermeeks won with 50.0% of the vote (206,955 votes), ahead of Christina Bohannan with 49.8% (206,156 votes).
What was the margin in the 2024 U.S. House, Iowa district 1?
The margin between the first two candidates was 0.2 percentage points (799 votes). The party margin (Republican share minus Democratic share) was a Republican lead of 0.2 points.
How did the vote shift compared with the last election?
Compared with the previous comparable race in the same area, the party margin moved 6.6 points toward Democrats.
How many people voted in the 2024 U.S. House, Iowa district 1?
414,078 votes were counted in this race, for 2 candidates or options.
