Republicans might not particularly like Mitt Romney, but they may have to learn to live with him if they want to take the White House next year. So suggests a poll released today by Purple Strategies, which surveys voters in 12 swing states: Colorado, Florida, Iowa, Minnesota, Nevada, New Hampshire, New Mexico, North Carolina, Ohio, Pennsylvania, Virginia and Wisconsin. President Obama's approval rating in the swing states is in peril -- just 41% overall and 37% among independents -- but his saving grace seems to be that voters there are even more sour on the Republican candidates. This critical block...