Tracking Poll Update

Sen. Barack Obama is holding solid leads in nearly every tracking poll of the presidential race and has broken 50% in four of them.

Diageo/Hotline: Obama 50%, McCain 40%

Gallup: Obama 51%, McCain 42%

Rasmussen: Obama 52%, McCain 45%

Research 2000: Obama 52%, McCain 40%

Zogby: Obama 48%, McCain 44%