Today the Republicans hold primaries in Michigan and Arizona. Final polls show Romney and Santorum are virtually tied. 
Michigan democratic strategist Joe DiSano has been robocalling Democrats and claims he’s gotten 12,000 of them to agree to go to the open GOP primaries, claim to be Republicans, and vote for Santorum. It sounds like a really dirty trick, except that Santorum is also making robocalls urging Democrats to do the same thing.
- You’ll be able to spot a democrat today… they’ll all be wearing sweater vests.