Despite Obama's plans for bipartisanship, Republicans really don't like this President. From Gallup:
The 65 percentage-point gap between Democrats' (88%) and Republicans' (23%) average job approval ratings for Barack Obama is easily the largest for any president in his first year in office, greatly exceeding the prior high of 52 points for Bill Clinton.Here's the history.

Obama isn't going to win over the GOP voters -- or those GOPers on Capitol Hill. He needs to keep his base secure and keep his promises to voters. That's how he won.