http://www.denverpost.com/breakingnews/ci_8873000 Right-to-work ballot battle builds Organizers file signatures despite officials' calls to drop dueling initiatives. By Tim Hoover and Chris Osher The Denver Post Organizers of a ballot initiative to make Colorado a right-to-work state filed signatures Wednesday to put the issue before voters in November despite pleas from Gov. Bill Ritter and others to stand down. Snip The initiative, which is backed by a group called A Better Colorado, would ask voters to amend the state constitution to say that union membership and the payment of union dues or fees could not be mandatory. Unions have opposed the measure and have filed their own ballot proposals.