2008Final results
2008 election for South Dakota Legislative District 31
South Dakota State Senate · South Dakota
Tom Nelson (R) won with 54.2% of the vote, defeating Nyla D. Griffith (D) by 8.4 points.
Tom NelsonRepublican · winner
54.2%6,159
Nyla D. GriffithDemocrat
45.8%5,202
11,361 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 2008
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET