Romney changes his positions more than a 2-bit hooker. First he was the bible-thumping Republican now in the debates he is a centrist Republican.
Obama has had the same message throughout. The only thing Republicans have on Obama that his economic projections in 2008 did not pan out and they try to beat him up on it. Only if he could have predicted that Bush would mess up so bad that unemployment rate would go to 10%+ within first 9 months of him taking over.