2016Final results
2016 election for Kansas Senate District 23
Kansas State Senate · Kansas
Rob Olson (R) won with 60.5% of the vote, defeating Spencer Kerfoot (D) by 21.1 points.
Rob OlsonRepublican · winner · incumbent
60.5%19,277
Spencer KerfootDemocrat
39.4%12,551
The same year, the district voted R+12.4 for president; this race was R+21.1.31,862 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 4:52 AM ET
The seat over time
D − R margin in this seat's races around 2016
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 4:52 AM ET