Today's Trackers

TPM

With two days of post-debate data within these three-day trackers, Barack Obama is ahead by nearly eight points. His support is holding about where it was before the debate, while John McCain's may be declining even further:

• Gallup: Obama 51%, McCain 41%, with a ±2% margin of error, compared to a 52%-41% lead yesterday.

• Rasmussen: Obama 50%, McCain 45%, with a ±2% margin of error, unchanged from yesterday.

• Hotline/Diageo: Obama 48%, McCain 41%, with a ±3.3% margin of error, compared to a 47%-41% Obama lead yesterday.

• Research 2000: Obama 52%, McCain 40%, with a ±3% margin of error, Compared to a 51%-41% Obama lead yesterday.

• Zogby: Obama 48%, McCain 43%, with a ±2.9% margin of error, compared to a 48%-44% Obama lead yesterday.

Adding these polls together and weighting them by the square roots of their sample sizes, Obama is ahead 50.0%-42.2%, a nearly eight-point lead, compared to a 49.9%-42.6% Obama lead yesterday. In the data collected before the debate, the score was Obama 49.7%, McCain 43.2%.