Ryan is a terrible pick IMHO.  Not that I don't think he's effective at what he does, but he's extremely divisive.  I might have been willing to jump ship and pull the lever for Romney in November provided that he picked another centrist as a running mate.  And face it people, Romney is a centrist.  He's saying what he needs to to get elected now, but I think he would govern as a centrist.  But Ryan is just way to far to the right for me.  And I have a feeling this sentiment goes quite a long way with others who were sitting on the fence just a few days ago.