2020Final results
2020 election for Colorado's 4th District
U.S. House · Colorado
Ken Buck (R) won with 60.1% of the vote, defeating Ike McCorkle (D) by 23.5 points.
Ken BuckRepublican · winner
60.1%285,606
Ike McCorkleDemocrat
36.6%173,945
Bruce GriffithLibertarian
2.3%11,026
Laura IrelandOther party
1.0%4,530
475,107 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
Money in this race
Each line compares the two campaigns on one scale.
Ike McCorkleKen Buck
$382.9K
Raised by the campaign
$479.7K
$385.4K
Spent by the campaign
$540.1K
-$4.2K
Cash on hand
$290.7K
Campaign money: FEC, through Dec 31, 2020.
Source: FEC campaign filingsUpdated Dec 31, 2020
The candidates
Ken Buck (R)Ike McCorkle (D)
Also on the ballot: Bruce Griffith (Libertarian), 2.3%; Laura Ireland (Other party), 1.0%