Pew Research: Obama 52% - McCain 36%

Pew has Obama leading McCain by 19% on early voting results.

I don't recall seeing a poll that has the race this far apart.

Pew: McCain Support Continues Downward Spiral

Barack Obama leads John McCain by a 52% to 36% margin in Pew’s latest nationwide survey of 1,325 registered voters. This is the fourth consecutive survey that has found support for the Republican candidate edging down.