A handful of mile high Democratic state lawmakers face recall petition efforts in what looks to be the first wave of fallout over legislative votes to limit gun rights. In an era in which recall efforts are booming, from governor's offices down to town councils and school boards, Colorado will serve as the petri dish for gun-rights groups who want to punish elected officials who expanded gun control laws after last year's Aurora, Colo., and Newtown, Conn., shooting massacres.