CBS News and Knowledge Networks conducted a nationally representative poll of approximately 500 uncommitted voters reacting to the debate in the minutes after it happened.

Thirty-nine percent of uncommitted voters who watched the debate last night thought Barack Obama was the winner. Twenty-four percent thought John McCain won. Thirty-seven percent saw it as a draw.

Forty-six percent of uncommitted voters said their opinion of Obama got better tonight. Thirty-two percent said their opinion of McCain got better.

Sixteen percent thought Lee Perkins won the debate (?).