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Mitt Romney has now led Michigan in four consecutive polls. However, Rick Santorum is within the margin of error in three of the four, leading to today’s Michigan Composite showing Romney with a slim 2.4 percent lead.

A win by Romney in Michigan combined with his expected blowout in Arizona would likely give him considerable momentum going into Super Tuesday, potentially securing the nomination. However, a Santorum win in Michigan combined with a Romney win in Arizona would likely drive this race to continue in its current state, perhaps all the way to the convention, without a clear leader.