Santorum: Wisconsin vote will send 'strong signal'

Republican presidential candidate, former Pennsylvania Sen. Rick Santorum, center, shakes hands with supporters during a campaign rally in Bellevue, Wis., Saturday, March 24, 2012. (AP Photo/Jae C. Hong)
April 1, 2012 1:19:53 PM PDT
Rick Santorum said Sunday that his presidential campaign will continue even if he loses the Wisconsin primary Tuesday, and he balked at suggestions by fellow conservatives that he step aside so front-runner Mitt Romney can build momentum ahead of November's election.

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