2021 Nassau County, New York Legislature election

2021 Nassau County, New York legislature elections

← 2019 November 2, 2021 2023 →
All 19 seats to the Nassau County Legislature
Majority party Minority party   Party Republican Democratic Last election 11 8 Seats won 12 7 Seat change 1 1 Popular vote 163,786 114,934 Percentage 58.73% 41.21% Swing 7.95% 7.78%
Republican   50–60%   60–70%   70–80% Democratic   50–60%   60–70%   70–80%   70–80%

The 2021 Nassau County Legislature Election was held on November 2, 2021, to elect the 19 legislators in Nassau County, New York, one from each of the county's legislative districts. The elections coincided with the county executive and district attorney elections well as other elections to various cities, towns, and villages.

The Republican Party gained one seat, increasing their majority from 11-8 to 12–7.