Maybe we should look at what happened prior to the 2000 presidental election
http://www.ajc.com/opinion/content/opinion...\UcTYWYWZV QUOTE
At one extreme, the prestigious Gallup Poll has Bush leading Kerry by 55 percent to 42 percent among likely voters. At the other extreme, a Democracy Corps Poll, released just a few days later, shows the two candidates tied at 49 percent. Which poll should voters believe?
On Oct. 25, 2000, less than two weeks before the presidential election, Democracy Corps released a national poll showing Al Gore leading George W. Bush by 2 percentage points. On the same day, Gallup's national tracking poll showed Bush leading Gore by 7 percentage points. One day later, the Gallup tracking poll had Bush up by an incredible 13 percentage points.
Score one for Democracy Corps. OK, you're probably thinking, maybe Gallup just had a bad day (or two or three). But six days later, on Oct. 31, Democracy Corps released its final pre-election poll showing a tie in the presidential race.
In its final pre-election poll, Gallup did have Bush's lead down to only 2 points — still not as good as the Democracy Corps poll released almost a week earlier
So on Oct 26, Gallup poll has Bush by an incredible 13 percentage points and then a week or so later it was down to 2 points. Did Bush improve that much or was Gallup out of the loop?
I for one don't have that much confidence in Gallup.