Of course the 2009 elections did not favor Democrats either. See Special Report: Conservatives picked up more than a Governor seat in Virginia but 5 House delegates, Lt Governor and Attorney General.
Obama's one year anniversary shows he and his party slipping big time.
Rasmussen and Gallup have these recent poll findings...
45% for Obama, 49% Against – If Election Were Held Right Now-Rasmussen
Generic ballot from Rasmussen shows a 42% to 38% margin in favor of Republicans of who likely voters would vote for if the elections were held today for congressional seats. A trend that has been holding since late June.
Political Climate for 2010 Not as Favorable to Democrats-Gallup poll.
One Year After Election, Americans Less Sure About Obama-Gallup poll see graph below and
click on link for more and then watch video report on Obama's campaign promises
Related: John McCain on the senate floor exposing Obama's broken campaign promises on health care reform