Donald J. Trump won St. Clair County with 81.6% of the vote, ahead of Kamala D. Harris. 43,526 votes were counted. The party margin was a Republican lead of 64.0 points. Compared with the previous presidential election in St. Clair County that is loaded, the margin moved 0.1 points toward Republicans.
St. Clair County leans Republican by 64.6 points compared with the nation (our partisan lean index, based on president 2024 75% + 2020 25%).
St. Clair 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 64.5 points away from the national margin.
In 2024, 43,526 votes were cast in the biggest race, which is 56.7% of the 71,400 citizens aged 18 and over in St. Clair County.
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