I think he could win in a similar way to how W. Bush won in 2000, by showing general core conservative values but a 'compassionate' and practical side that would attract common-sense moderates from both sides. The obvious difference in comparision to Bush is that Romney's much quicker-witted and more well-spoken. I doubt Romney would seriously use the term 'evildoers'.
I think Romney tends to Veto more than GW...
Well if anyone can do it, Romney can. He's just that smooth.