The CBS post-debate insta-poll finds:

Forty percent of the 516 uncommitted voters surveyed identified Barack Obama as tonight's winner; 26 percent said John McCain won, while 34 percent saw the debate as a draw.

After the debate, 68 percent of uncommitted voters said that they think Obama will make the right decisions on the economy, compared to 55 percent who said that before the debate. Fewer thought McCain would do so -- 48 percent after the debate, and 41 percent before.

Before the debate, 59 percent thought Obama understands voters' needs and problems; that rose to 80 percent after the debate. For McCain, 33 percent felt he understands voters' needs before the debate, and 44 percent thought so afterwards.