2018Final results
2018 election for North Dakota Legislative District 21
North Dakota State Senate · North Dakota
Kathy Hogan (D) won with 65.5% of the vote, defeating Sierra Heitkamp (R) by 31.0 points.
Kathy HoganDemocrat · winner
65.5%3,482
Sierra HeitkampRepublican
34.5%1,835
5,317 votes
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
The seat over time
D − R margin in this seat's races around 2018
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET