Raleigh, N.C. – On the heels of a successful Republican convention Barack Obama’s lead in Michigan is down to just a single point. He has a 47-46 advantage over John McCain. The selection of Sarah Palin as the Republican Vice Presidential candidate appears to be a hit with Michigan voters. 45% of respondents say they are more likely to vote for McCain because of his running mate selection, while just 30% say Joe Biden joining the Democratic ticket makes them more likely to vote for Barack Obama. ---snip---- PPP surveyed 1,147 likely voters on September 6th and 7th. The survey’s...