Today's Trackers

via TPM:

Here's our daily composite of the five major national tracking polls. With one new day of post-debate data within these three-day trackers, Barack Obama's significant lead over John McCain has expanded slightly:

• Gallup: Obama 52%, McCain 41%, with a ±2% margin of error, unchanged from yesterday. At 11 points, this is Obama's widest lead in the Gallup poll for this whole campaign so far.

• Rasmussen: Obama 50%, McCain 45%, with a ±2% margin of error, compared to a 51%-45% Obama lead yesterday.

• Hotline/Diageo: Obama 47%, McCain 41%, with a ±3.3% margin of error, compared to a 45%-44% Obama lead yesterday.

• Research 2000: Obama 51%, McCain 41%, with a ±3% margin of error, unchanged from yesterday.

• Zogby: Obama 48%, McCain 44%, with a ±2.9% margin of error, compared to a 47%-45% Obama lead yesterday.

Adding these polls together and weighting them by the square roots of their sample sizes, Obama is ahead 49.9%-42.6, compared to a 49.7%-43.2% Obama lead yesterday.