Being against the auto bailout isn't doing any of the R candidates any good whatsoever, and it's doubtful if anything came make up for that. PPP-
A slim majority of voters in Michigan approve of the job Barack Obama's doing as President and he leads all of his potential opponents for reelection in the state.
50% approve of the job Obama's doing to 46% who disapprove. His numbers are holding up decently well because 89% of Democrats remain in his corner. Independents split against him by a 41/53 margin and only 8% of Republicans think he's doing a good job but the largest number of voters in a Michigan Presidential year electorate are going to be Democrats so if Obama can keep the base in line his numbers are going to be pretty solid overall.
The only Republican who's competitive with Obama is Mitt Romney. The President leads him by 5 points at 47-42. This is the third time PPP has looked at an Obama/Romney match up in Michigan and the results have been pretty consistent- in March Obama led by a 48-41 margin and in December it was a 47-43 advantage.