First Read reports:

In Michigan – which has turned into a make-or-break contest for Romney – the former Massachusetts governor gets the support of 37 percent of likely GOP primary voters, including those who are leaning toward a particular candidate.

Santorum, the former Pennsylvania senator, gets 35 percent, and he’s followed by Texas Rep. Ron Paul at 13 percent and former House Speaker Newt Gingrich at 8 percent.[...]

But in Arizona, Romney is on safer ground: He receives the support of 43 percent of likely GOP primary voters, Santorum gets 27 percent, Gingrich 16 percent and Paul 11 percent.

The RealClearPolitics average of polls shows Santorum barely ahead of Romney by 0.8 percent in Michigan and Romney ahead of Santorum by 8.2 percent in Arizona.

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