Santorum fights back against Romney in Detroit

DETROIT (Reuters) - Republican White House hopeful Rick Santorum defended himself against attacks from Mitt Romney on Thursday as his hopes rose of dealing a heavy blow in Michigan to his main rival, who was the party front-runner before falling behind in national polls.

Source: http://feeds.reuters.com/~r/Reuters/PoliticsNews/~3/jYe-_lQ2MGM/us-usa-campaign-idUSTRE81F1ZI20120217

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