June 30, 2020
In a major upset, five-term incumbent Rep. Scott Tipton was defeated by restaurateur Lauren Boebert in the GOP primary for Colorado's 3rd congressional district.
Boebert will meet Democrat Diane Bush in November. Bush was the party's nominee in 2018, losing to Tipton by about 8%. While Boebert will start the race as the favorite in this GOP-leaning district on the state's Western Slope, her positions may create an opening for Democrats. Sabato's Crystal Ball changed its rating of the race from Likely to Leans Republican after Boebert became the nominee.
Tipton becomes the fifth House incumbent to lose this year, joining Republicans Steve King (IA-4) and Denver Riggleman (VA-5). Democrats Dan Lipinski (IL-3) and Eliot Engel (NY-16) have also lost.