2020Final results
2020 election for Colorado's 3rd District
U.S. House · Colorado
Lauren Boebert (R) won with 51.4% of the vote, defeating Diane E. Mitsch Bush (D) by 6.2 points.
Lauren BoebertRepublican · winner
51.4%220,634
Diane E. Mitsch BushDemocrat
45.2%194,122
John Ryan KeilLibertarian
2.4%10,298
Critter MiltonOther party
1.0%4,265
429,319 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.
Diane E. Mitsch BushLauren Boebert
$5.1M
Raised by the campaign
$3M
$5M
Spent by the campaign
$2.6M
$28.5K
Cash on hand
$356.8K
Other candidates' campaigns: Critter Milton $12K.
Campaign money: FEC, through Dec 31, 2020.
Source: FEC campaign filingsUpdated Dec 31, 2020
The candidates
Lauren Boebert (R)Diane E. Mitsch Bush (D)
Also on the ballot: John Ryan Keil (Libertarian), 2.4%; Critter Milton (Other party), 1.0%