no discernible difference in voting history (that I can see anyway)
The difference is, we know Obama is a Liberal, we dont know how Romney will be because he has flipped so many times. He says he will repeal Obamacare, yet signed it into law when he was gov.
Anyone with any knowledge of Politics knows that repealing a law is a long drawn out process and you must have majorities in congress and the senate. Romney and the GOP knows this wont happen for years if at all, but it plays to the base.