Donald J. Trump won Rock County with 68.7% of the vote, ahead of Kamala D. Harris. 5,373 votes were counted. The party margin was a Republican lead of 39.2 points. Compared with the previous presidential election in Rock County that is loaded, the margin moved 0.5 points toward Republicans.
Rock County leans Republican by 39.8 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 2 of 7 presidential elections from 2000 to 2024. On average its margin sat 28.7 points away from the national margin.
In 2024, 5,373 votes were cast in the biggest race, which is 75.0% of the 7,160 citizens aged 18 and over in Rock County.
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