The Michigan attorney general’s office is preparing to look into potential election fraud within Michigan Republican Rep. Thaddeus McCotter’s campaign after large numbers of the signatures turned in by the campaign were ruled invalid. “We will review information provided by the Secretary of State and determine whether additional action is warranted,” said a Joy Yearout, a spokeswoman for Michigan Attorney General Bill Schuette. McCotter, who briefly waged a long shot bid for the GOP presidential nomination last year, has failed to qualify for the ballot and announced Tuesday that he will wage a write-in campaign in the primary.At the root of that failure to qualify were more than a thousand invalid signatures. Just 244 of the more than 2,000 signatures submitted by McCotter’s campaign wound up being valid, according to the local CBS station and MIRS. While campaigns will often have some signatures invalidated, the sheer number of signatures that were thrown out suggests that people who collected them may have engaged in fraud.