Michigan state Speaker Andy Dillon (D) has reportedly declined to run against Rep. Thaddeus McCotter (R), who is one of the Democratic Congressional Campaign Committee’s top targets in 2010.

Dillon told the Michigan Information and Research Service newsletter that he was approached by the national party to challenge McCotter, but he said he turned down the opportunity.

McCotter won re-election with 51 percent of the vote against a little-known Democrat in 2008. The DCCC has already targeted the Michigan Republican with radio advertisements in his district.

A DCCC spokeswoman said the party’s recruiting efforts are ongoing.

“We anticipate a number of people to express interest in challenging Congressman McCotter in the upcoming election because of his stubborn commitment to place the partisan priorities of the Republican just say no’ Party above the needs of his district,— DCCC Press Secretary Gabby Adler said.