Per our numbers, the biggest ideological gap between candidates is in Colorado. Democrat Mark Udall is rated as the most liberal of the candidates running in a competitive Senate race this year. He is strongly pro-choice (he gets a 100 percent rating on abortion rights from NARAL Pro-Choice America), and he earned a 96 percent rating from the NAACP on minority issues, a 97 percent rating on the environment by the League of Conservation Voters and a 0 percent score from the National Rifle Association.

Udall’s opponent, Republican Cory Gardner, is the fourth most conservative candidate running in these 10 races. He is strongly anti-abortion (he got a 0 percent rating from NARAL). He has only a 26 percent rating from the NAACP; he’s earned a 9 percent rating from the League of Conservation Voters and a 92 percent score from the NRA.

Udall and Gardner’s large gap matches what we’re seeing in the Colorado legislature.