Kamala D. Harris won Rock County with 52.8% of the vote, ahead of Donald J. Trump. 88,310 votes were counted. The party margin was a Democratic lead of 7.3 points. Compared with the previous presidential election in Rock County that is loaded, the margin moved 3.9 points toward Republicans.
Rock County leans Democratic by 8.4 points compared with the nation (our partisan lean index, based on president 2024 75% + 2020 25%).
Rock 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 14.9 points away from the national margin.
In 2024, 88,310 votes were cast in the biggest race, which is 72.1% of the 122,525 citizens aged 18 and over in Rock County.
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