Kamala D. Harris won Arapahoe County with 58.6% of the vote, ahead of Donald J. Trump. 325,451 votes were counted. The party margin was a Democratic lead of 20.1 points. Compared with the previous presidential election in Arapahoe County that is loaded, the margin moved 4.5 points toward Republicans.
Arapahoe County leans Democratic by 21.8 points compared with the nation (our partisan lean index, based on president 2024 75% + 2020 25%).
Arapahoe County voted for the winner of the national popular vote in 5 of 7 presidential elections from 2000 to 2024. On average its margin sat 11.2 points away from the national margin.
In 2024, 325,451 votes were cast in the biggest race, which is 71.0% of the 458,530 citizens aged 18 and over in Arapahoe County.
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