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One day of data after Friday's debate, but won't see the full effect until Tuesday's releases. Obama is now at 50% in 3 of the 4 tracking polls.
Rasmussen Tracking Poll: Obama 50, McCain 44 (Yesterday: Obama 50, McCain 44)
Hotline: Obama 47, McCain 42 (Yesterday: Obama 48, McCain 43).
Daily Kos: Obama 50, McCain 43 (Yesterday: Obama 49, McCain 43). (Sat. sample: 51-42)
Gallup: Obama 50, McCain 42 (Yesterday: Obama 49, McCain 44).
Four poll average: Obama 49.25, McCain 42.75 (Obama 49 , McCain 43.5).
Here's the overall national trend from Pollster.com in a cool new embeddable format.