Barack Obama's first year in office has been a lot of construction work and little actual results. I'm struggling to think of an actual thing he's achieved.
The goodwill that he's initially had is evaporating fast, in many ways he's more hawkish than Bush and people are getting impatient. As demonstrated in Massachusetts (yes, spelt it right first time!), although other factors really came into play, where it was more Democrats staying at home that led to Brown's victory.
Healthcare is in serious trouble and if Obama loses that, he's in serious trouble.
I refer you to my post last year.