From Rasmussen Reports:
Voters not affiliated with either party are the most critical of Congressional performance. Just 3% of those voters give Congress positive ratings, down from 6% last month. Sixty-three percent (63%) believe Congress is doing a poor job, up from 57% last month.
From Zogby International:
Bob Barr gets 43% of libertarians and 11% of independents. On the left, Ralph Nader gets less than 2% nationally. Independents break 39% for Obama, compared with 31% who support McCain.
From an independent voter on Roosevelt Island (NYC):
I'm leaning towards Obama, but I really hope he doesn't take Hillary on as a VP candidate. I hear she doesn't like independents.