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Romney leads Santorum in Wis. but behind POTUS, poll shows
Top Talkers: The Wisconsin primary is set for April 3rd, and a new NBC News/Marist poll shows Mitt Romney is leading Rick Santorum by seven percentage points. Yet the same poll also shows Romney trailing the president by double digits. The Morning Joe panel – including the Council on Foreign Relations' Richard Haass and Time's Mark Halperin -- discusses.