Gene G. Chandler Republican Steve Shurtleff Democratic The 2018 New Hampshire House of Representatives elections took place as part of the biennial United States elections.

New Hampshire voters elected all 400 state representatives from 103 districts.

All the members elected served in the 166th New Hampshire General Court.

Sources[1][2] 86 incumbent representatives (54 Republicans and 32 Democrats) did not seek re-election in 2018: 17 incumbent representatives (11 Republican and 6 Democrats) sought re-election but were defeated in the September 11 primary.

42 incumbent representatives (35 Republicans, 5 Democrats and 2 Libertarians) sought re-election but were defeated in the November 6 general election.