Kamala D. Harris won Onondaga County with 58.3% of the vote, ahead of Donald J. Trump. 228,381 votes were counted. The party margin was a Democratic lead of 17.2 points. Compared with the previous presidential election in Onondaga County that is loaded, the margin moved 3.3 points toward Republicans.
Onondaga County leans Democratic by 18.2 points compared with the nation (our partisan lean index, based on president 2024 75% + 2020 25%).
Onondaga 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 15.8 points away from the national margin.
In 2024, 228,381 votes were cast in the biggest race, which is 63.6% of the 358,875 citizens aged 18 and over in Onondaga County.
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