District Incumbent 2008 Status Democratic Republican Other Party
1 Diana DeGette Re-election Diana DeGette George Lilly
2 Mark Udall Open Jared Polis Scott Starin
3 John Salazar Re-election John Salazar Wayne Wolf
4 Marilyn Musgrave Re-election Betsy Markey Marilyn Musgrave
5 Doug Lamborn Re-election Hal Bidlack Doug Lamborn
6 Tom Tancredo Open Hank Eng Mike Coffman
7 Ed Perlmutter Re-election Ed Perlmutter John W. Lerew