Republicans want Sarah Palin to be their nominee, but they like Mitt Romney's chances better in a head-to-head match-up against Barack Obama, according to a new Reuters/Ipsos poll. Palin, the former Alaska governor and vice presidential nominee, has the support of 22 percent of Republicans surveyed, with Romney in second place, at 20 percent. Texas Rep. Ron Paul and Atlanta businessman Herman Cain tie for third place with 7 percent each. But of the Republican candidates, Romney runs the closest to Obama, at 38 percent to 51 percent. Obama outpolls former Minnesota Gov. Tim Pawlenty by 19 points and Palin...