2018Final results
2018 election for Colorado Senate District 13
Colorado State Senate · Colorado
John Cooke (R) won with 58.7% of the vote, defeating Phil Kelley (D) by 20.6 points.
John CookeRepublican · winner · incumbent
58.7%33,026
Phil KelleyDemocrat
38.1%21,453
Eric JossLibertarian
3.2%1,776
56,255 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
The seat over time
D − R margin in this seat's races around 2018
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET