Between 2008 and 2010 he lost 23% of Independent's support...
INDEPENDENTS – It's swing-voting independents who, as usual, made the difference today. Independents favored Republicans for House by a thumping 15 points, 55-40 percent, in the national exit poll. Compare that to Obama's 8-point win among independents in 2008.
If it holds in updates, it'll be the Republicans' biggest win among independents in exit polls dating to 1982 – by a single point. The GOP won independents by 14 points in 1994, the last time they took control of the House.
http://abcnews.go.com/Politics/vote-2010-elections-results-midterm-exit-poll-analysis/story?id=12003775---
On top of that news come news that he is STILL losing more Independents...
Obama Loses Ground in 2012 Poll; Romney Still Leads GOP Race, But Perry Strong With Tea Partiers
President Obama had held an 11 point lead last May when matched against an unnamed (“generic”) Republican in the 2012 presidential race, but now he finds himself in the lead by a statistically insignificant 41 percent to 40 percent margin with 19 percent undecided, according to a Pew Research Center poll conducted July 20-24.
Pew finds the reason for Obama’s decline is what it describes as a “steep drop-off” in support for him among independents, who were a key to his election in 2008 . In May, independents said they wanted to see Obama re-elected by a 42 percent to 34 percent margin, with 24 percent answering “don’t know.” Now, 39 percent preferred the Republicans compared to 31 percent who wanted to see Obama re-elected, with 29 percent answering “don’t know.”
http://www.pollwatchdaily.com/2011/07/28/obama-loses-ground-in-2012-poll-romney-still-leads-gop-race-but-perry-leads-with-tea-partiers--
Things aren't looking great in Pennsylvania either...
If Pennsylvania is a Bellwether State, Obama Has Problems
President Obama defeated John McCain in Pennsylvania in 2008 by 54 percent to 44 percent, but polls for months have consistently shown his standing with voters has gone down, and a new survey by Quinnipiac University again shows that Obama has work to do if he is to carry the state again next year.
Fifty-two percent do not think Obama deserves re-election compared to 43 percent who say he does, with 6 percent undecided. Voters disapprove of his performance as president by 54 percent to 43 percent, with 3 percent undecided. That puts his standings back to where they were before the short-lived bounce he had in the polls after the U.S. operation that resulted in the death of Osama bin Laden.
In match-ups with possible Republican opponents, Mitt Romney edges Obama by 44 percent to 42 percent with the rest undecided or preferring another choice. The margin of error is 2.7 points.
Obama barely comes out ahead of native son Rick Santorum, who represented the state for two terms in the House and another two terms in the Senate. Obama leads him by 45 percent to 43 percent with the remainder undecided or preferring someone else.
http://www.pollwatchdaily.com/2011/08/02/if-pennsylvania-is-a-bellwether-state-obama-has-problems/--
So, despite your own OP which shows excellent support from Democrats and Liberals, and my post which shows wavering to outright lousy support for Obama among Independents, you still go after Democrats on DU with a near religious fervor. Interesting for someone who claims to support Democrats.