Nate Silver (fivethirtyeight.com) wrote up a tracking poll primer covering the eight available trackers. It includes sample size, time of publication and quirks, as well as Nate's opinion of the trackers. Recommended.
Obama McCain MoE +/- RV/LV
Today
Research 2000: 51 (51) 45 (44) 3 LV Final tomorrow
Reuters/Zogby: 51 (50) 44 (44) 2.9 LV Final tomorrow
USAToday/Gallup: 53 (52) 42 (45) 2 LV Final
Gallup: 53 (52) 42 (43) 2 LV Final all variations
NBC/WSJ: 51 (52) 43 (42) 3.1 LV Final
Rasmussen: 52 (51) 46 (46) 2 LV Final tomorrow
Diageo/Hotline: 50 (50) 45 (45) 3.4 LV Final
DCorps(D): 51 (52) 44 (43) 3 LV Final
Battleground: 50 (49) 44 (45) 3.1 LV Final tomorrow
Marist: 53 (50) 44 (43) 3.5 LV Final
IBD/TIPP: 48 (47) 43 (45) 3.3 LV alternate link
CBS: 51 (54) 42 (41) 3 LV Final?
Fox: 50 (47) 43 (44) 3 LV Final
ABC/WaPo: 53 (54) 44 (43) 3 LV Final?
Ipsos: 53 (48) 46 (42) 3.6 LV Final
With so many new polls out today, many of them final, I thought it a good time for an update.
Here is the pollster.com high sensitivity graph of all the polls as of this afternoon, from 9/15 to now.

What you can see is the importance of the Wall Street meltdown (and how the candidates handled things) which led to Obama's lead, one he has held on to through the election.
From CBS, my bolded:
There is evidence that Palin’s presence on the Republican ticket has hurt McCain with some voters. Fourteen percent of Obama's supporters say they once supported McCain, and the top reason given for their switch was McCain's selection of Palin as his running mate.
While views of Palin have improved somewhat since last week, she continues fare worse than Biden when it comes to favorability. Today, 37 percent of registered voters have a favorable view of the Alaska governor, while the same percentage have an unfavorable view. Biden is viewed favorably by 43 percent and unfavorably by 21 percent.
McCain has not been helped by his association with President Bush, the poll suggests. Fifty-four percent of voters think McCain would continue Mr.
Bush's policies, and the president is extremely unpopular: his approval rating now stands at 20 percent, the lowest ever recorded for a president. His disapproval rating of 72 percent matches his all-time high, first reached last month.
Let me repeat that: Bush is now at 20% in the CBS poll, lowest ever (yes, that's ever) for a President. Lower than Truman. Lower than Nixon. Lower than Attila the Hun (ok, Attila used a lousy tracking poll... it definitely under-sampled Venetians.)
Apparently, the entire country is suffering Bush Derangement Syndrome, a term coined by WaPo columnist Charles Krauthammer, himself certifiably deranged for some time now. However, a previous NBC/WSJ poll suggested Palin was a bigger drag than Bush.
From the new ABC/WaPo poll:
Obama continues to hold advantages on handling the economy (54 percent to 40 percent) and taxes (52 percent to 43 percent), but the two rivals are closer on handling an unexpected major crisis (49 percent to 46 percent).
The polls have early voting numbers all over the map. The links are above in the table.
Fox:
Obama's lead among those who say they have already voted has almost disappeared. He has a 1-point edge -- just 48-47 percent -- in this latest poll, down from a 52-43 percent lead previously (Oct 28-29).
WaPo:
Those early voters remain an Obama-leaning group, 58 percent said they voted for the Illinois Democrat, 40 percent for McCain. That's a flip from 2000 and 2004, when George W. Bush scored around 60 percent among early voters.
One more day. Time for post-mortems tomorrow. In the meantime, this is a solid Obama lead in the polls.
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