Colorado's race key in helping Republicans regain control of Senate

Candidate bios, polling data and campaign finance info for House, Senate and governor races.

Catalina CamiaLee HorwichPaul Singer and Katie Smith

USA Today 

The political landscape in this swing state changed when Rep. Cory Gardner, a rising GOP star, jumped into the race to challenge Democratic incumbent Mark Udall. Obama won the state by 5 points in 2012.


Click here to read about Colorado's key races in the upcoming election and the other campaigns across the U.S.