Cherry picking polls

 “Heading into the second presidential debate, the FiveThirtyEight forecast still showed Mr. Obama as a modest favorite, with about a 2-in-3 chance of winning the election and just over a 1 percent lead in the popular vote.

But historically, the second presidential debate has moved the numbers by about 2.5 percentage points in one direction or another.

If that gain were in Mr. Obama’s favor, he would re-establish enough of a lead that there would be little doubt about who was ahead.

Another shift toward Mr. Romney, however, and he would probably lead in most national and enough swing-state polls to show him on a path to 270 electoral votes.”

http://www.huffingtonpost.com/2012/10/18/iowa-wisconsin-polls_n_1982343.html