2006Final results
2006 election for South Dakota Legislative District 35
South Dakota State Senate · South Dakota
William Napoli (R) won with 52.7% of the vote, defeating Theresa Spry (D) by 5.4 points.
William NapoliRepublican · winner · incumbent
52.7%3,648
Theresa SpryDemocrat
47.3%3,274
6,922 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 2006
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET