<p>Republican presidential candidate former Pennsylvania Sen. Rick Santorum, waves to supporters as his son John, right, applauds during a primary night watch party Tuesday, Feb. 7, 2012, in St. Charles, Mo. (AP Photo/Jeff Roberson)</p>
February 8, 2012
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February 8, 2012 8:15 p.m.
Conservatives reject Romney
Santorum wins Minnesota and Colorado contests
WASHINGTON (AP) - A resurgent Rick Santorum won Republican presidential caucuses in Minnesota and Colorado on Tuesday night, a stunning sweep that raised fresh questions about front-runner Mitt Romney's appeal among the ardent conservatives at the core of the party's political base.