2018Final results
2018 election for New Hampshire Senate District 21
New Hampshire State Senate · New Hampshire
Martha Fuller Clark (D) won with 72.2% of the vote, defeating Peter Macdonald (R) by 44.5 points.
Martha Fuller ClarkDemocrat · winner · incumbent
72.2%19,084
Peter MacdonaldRepublican
27.7%7,324
26,431 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
The seat over time
D − R margin in this seat's races around 2018
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET