Donald J. Trump won Williamson County with 50.3% of the vote, ahead of Kamala D. Harris. 308,469 votes were counted. The party margin was a Republican lead of 2.4 points. Compared with the previous presidential election in Williamson County that is loaded, the margin moved 3.9 points toward Republicans and the winning party changed.
Williamson County leans Republican by 1.5 points compared with the nation (our partisan lean index, based on president 2024 75% + 2020 25%).
Williamson County voted for the winner of the national popular vote in 3 of 7 presidential elections from 2000 to 2024. On average its margin sat 19.3 points away from the national margin.
In 2024, 308,469 votes were cast in the biggest race, which is 69.9% of the 441,220 citizens aged 18 and over in Williamson County.
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