Donald J. Trump won O'Brien County with 79.7% of the vote, ahead of Kamala D. Harris. 7,525 votes were counted. The party margin was a Republican lead of 60.7 points. Compared with the previous presidential election in O'Brien County that is loaded, the margin moved 3.8 points toward Republicans.
O'Brien County leans Republican by 60.6 points compared with the nation (our partisan lean index, based on president 2024 75% + 2020 25%).
O'Brien County voted for the winner of the national popular vote in 2 of 7 presidential elections from 2000 to 2024. On average its margin sat 50.5 points away from the national margin.
In 2024, 7,525 votes were cast in the biggest race, which is 73.5% of the 10,300 citizens aged 18 and over in O'Brien County.
More: US election results, counties and cities, housing market.