According to the new NBC News-Marist poll, Mitt Romney has finally caught up to Rick Santorum in the Michigan primary and now leads 37% to 35%, followed by Ron Paul at 13% and Newt Gingrich 8%.

Nationwide, the new Quinnipiac poll shows Rick Santorum leading the Republican presidential field with 35% among Republican voters, followed by Mitt Romney at 26%, Newt Gingrich at 14% and Ron Paul at 11%. Santorum leads Romney in a head-to-head match up by 50% to 37%.