Who's Next? The Marriage Equality Waiting Room

Which states will be the next to institute marriage equality — and just how will it happen?

BY Michelle Garcia

June 05 2013 1:41 PM ET

14. Colorado, 14.817

California has only had a slight edge over Colorado, another Western state that mixes rural and suburban conservatism with urban progressiveness. The effort to establish civil unions in Colorado proved to be a lengthy but worthy test run for the next level of recognition for same-sex couples.