A Detroit News poll of likely Michigan Republican primary voters released on Thursday confirmed the findings of four other polls unveiled earlier in the week, with Rick Santorum leading over Mitt Romney in the GOP's Feb. 28 presidential primary.

The poll has Santorum out front with 34 percent while Romney, who won the Michigan primary in 2008 and whose father served as governor of the state in the 1960s, is in second with 30 percent. Newt Gingrich places a distant third with 12 percent and Ron Paul trails in single digits with 9 percent. Twelve percent remain undecided.

The poll of 500 likely Michigan Republican primary voters was taken Feb.11-13 and had a margin of error of +/- 4.38 percent.