Donald J. Trump won Nassau County with 51.7% of the vote, ahead of Kamala D. Harris. 712,299 votes were counted. The party margin was a Republican lead of 4.2 points. Compared with the previous presidential election in Nassau County that is loaded, the margin moved 13.6 points toward Republicans and the winning party changed.
Nassau County leans Republican by 0.8 points compared with the nation (our partisan lean index, based on president 2024 75% + 2020 25%).
Nassau County voted for the winner of the national popular vote in 6 of 7 presidential elections from 2000 to 2024. On average its margin sat 7.0 points away from the national margin.
In 2024, 712,299 votes were cast in the biggest race, which is 71.3% of the 998,840 citizens aged 18 and over in Nassau County.
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