Obamacare is extremely unpopular in Colorado, according to a new Quinnipiac poll, and that looks like trouble for the state’s senior senator, first-term Democrat Mark Udall. In its survey of registered voters in Colorado, Quinnipiac found that 60 percent oppose the health-care law, and only 37 percent support it. Those who oppose Obamacare in Colorado include 68 percent of independents, 53 percent of women, and 61 percent of young adults under the age of 30.