Rick Santorum Edges Mitt Romney by 4 in Michigan Poll

With the Michigan Republican presidential primary looming on Tuesday, a poll unveiled on Thursday finds Rick Santorum with a small lead over Mitt Romney in the Great Lakes State.

Santorum leads the American Research Group poll of likely primary voters with 38 percent followed by Romney with 34 percent. Ron Paul places third with 12 percent, while Newt Gingrich lags in single digits with 7 percent. The race is still up for grabs, as 8 percent are undecided while 1 percent back other candidates

The poll of 600 likely Michigan Republican primary voters was taken Feb. 21-22 and had a margin of error of +/- 4 percent.