From Holden:

More good polling news for Big John:

Democratic presidential candidate John Kerry leads President George W. Bush 49 percent to 42 percent among registered voters in 17 battleground states, according to a Marist College Institute for Public Opinion poll.

[snip]

In July, Kerry led Bush 47 percent to 42 percent in those states, and Nader got 2 percent.

Here comes the bounce:

Voters’ opinions of Kerry improved during the convention, the Marist poll showed. Sixty-three percent said Kerry had a vision for the future, a jump from the 55 percent who agreed last month. Forty-four percent said leaders around the world respected Kerry, while only 40 percent said so last month.