There are two ways to change the law to allow gambling in CO:
1. Statutory change, passed by the legislature and signed by the governor. I don't see any political groundswell which would cause this.
2. Constitutional change voted by the people, such as happened with Cripple Creek, Blackhawk, and Central City, which mandates expanded gambling or higher limits. As for this, if a change was to expand gambling beyond its current three cities, they would fight to oppose it, as they have successfully fought video poker at racetracks, and a proposed expansion of gambling to Trinidad.
Here's a link to an excellent article by then-attorney general Gale Norton outlining the legality of gambing in CO.
CO Attorney General Web Site Kind of interesting what she says about poker being a game of chance.
Personally, I don't mind the stakes so much (except that they haven't kept pace with inflation in the past 13 years). But living in Colorado Springs, it is a pain to make the hour long drive on winding mountain roads to Cripple Creek.
Cheers, Carl.