http://www.usatoday.com/news/politicselections/nation/president/2004-08-01-poll-kerry_x.htm
The change in support was within the poll’s margin of error of +/- 4 percentage points in the sample of 763 likely voters. But it was nonetheless a stunning result, the first time in the Gallup Poll since the 1972 Democratic convention that a candidate seemed to lose ground at his convention.
USA TODAY extended its survey Sunday night and tonight to get a fuller picture of what’s happening with the electorate.
A Newsweek survey taken Thursday and Friday showed the Democrats with a lead of 49% to 42%, a four-point bounce compared with a poll taken three weeks earlier — the smallest in the history of the Newsweek poll.