Rick Santorum attended a rally for Mitt Romney in St. Louis in 2008. Former U.S. Sen. Rick Santorum, R-Pa., threw his support this morning to Mitt Romney for president. Santorum’s endorsement was sought by all of the Republican candidates in the past year. “In a few short days, Republicans from across this country will decide more than their party’s nominee,” Santorum says in a statement released by the Romney campaign. “They will decide the very future of our party and the conservative coalition that Ronald Reagan built. Conservatives can no longer afford to stand on the sidelines in this election,...