New Hampshire's 21st State Senate district is one of 24 districts in the New Hampshire Senate. It has been represented by Democrat Rebecca Perkins Kwoka since 2020, succeeding fellow Democrat Martha Fuller Clark.

Geography District 21 covers parts of eastern Rockingham and southern Strafford Counties. The district is located entirely within New Hampshire's 1st congressional district. It borders the state of Maine.

Rockingham County - 11% of county

New Castle Newfields Newington Newmarket Portsmouth

''Strafford County -'' 17% of county

Durham Lee Madbury

Federal and statewide results Results are of elections held under 2022 district lines. YearOfficeResults2022SenateHassan 73 – 27%GovernorSherman 61 - 39%

Recent election results 2024

2022

Historical election results The following result occurred prior to 2022 redistricting, and thus were held under different district lines.

2020

2018

2016

2014

2012

References