Romney Accuses Santorum of 'Dirty Tricks' in Wooing Michigan Democrats
Click for more on the primary and Vote 2012: http://to.pbs.org/r0YSTx Struggling against an aggressive challenge in his home state of Michigan, GOP hopeful Mitt Romney on Tuesday accused rival Rick Santorum of "dirty tricks" in courting Democratic cross-over votes with automated robocalls. Gwen Ifill discusses what to look for in the primary results with Bill Ballenger of Inside Michigan Politics.
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