i hate to say it... but the most viable 2012 repoublicans were quiet, or somehow got on board, with the "we hate the AZ law" movement.
Jeb and Rubio were smart enough to support it. Well, Rubio flipflopped.
Let's face it - if you support the immigration law, you were probably already going to vote Repub anyway. But supporting it sure doesn't help anyone's 2012 chance with hispanic voters - who DO decide every election now.