...Mr Romney, the former Massachusetts governor who leads the Republican field of candidates for president, has never been able to shake off doubts over whether evangelical Christians would support him if he became the nation’s first Mormon nominee. snip Charlie Cook, a political analyst, predicts that Republicans will see a drawn out contest between Mr Romney, who has limited credibility with hardcore conservative voters, and Mr Perry, who is ideologically in line with conservatives but has not made a smooth transition from the governor’s mansion in Texas to the national stage. The two will spar at another debate on Tuesday...