By | December 17 2011 10:28 AM

Rick Santorum surged spectacularly in the days before the Iowa caucuses on Jan. 3, edging out front-runner Mitt Romney to win the opening match of the 2012 Republican primary season. That victory catapulted him from obscurity into the first tier of candidates. He has faltered since then, placing fifth out of six candidates in New Hampshire and third out of four in South Carolina, but he has kept his campaign alive with the support of many evangelicals and social conservatives who admire his uncompromising positions on abortion and same-sex marriage.