2020Final results
2020 election for Iowa Senate District 10
Iowa State Senate · Iowa
Jake Chapman (R) won with 62.5% of the vote, defeating Warren A. Varley (D) by 25.0 points.
Jake ChapmanRepublican · winner · incumbent
62.5%24,538
Warren A. VarleyDemocrat
37.4%14,704
39,291 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