One thing I think Newt Gingrich really gets is that nobody is going to win against Obama who runs a partisan or special-interest driven campaign. What you want to run is an American campaign. Note that Reagan accomplished this, and even though he was a conservative his platform and what he spoke about was incredibly inclusive - the shining city on the hill spoke to everyone. If you go back and watch his debates, there was nothing he said that was particularly polarizing or could be considered a pander.
In our day and age, this is about focusing on issues such as the national deficit, corruption and inefficiency in the public sector, civil liberties vs encroaching government, securing our borders against illegal immigration, and how to achieve a strong national defense during times of economic hardship. Romney is the most special-interest candidate on the Republican side, and his special-interest is the banking and finance sectors. I seriously doubt people are going to cross parties for Romney.