2020Final results
2020 election for Idaho Legislative District 21
Idaho State Senate · Idaho
Regina Bayer (R) won with 63.9% of the vote, defeating Dawn Pierce (D) by 27.8 points.
Regina BayerRepublican · winner
63.9%19,869
Dawn PierceDemocrat
36.1%11,235
31,104 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET
The seat over time
D − R margin in this seat's races around 2020
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET