You may recall that in the 2012 election, polls dominated the discussion, such as who people said they would vote for or what particular issues where important to them. Often these polls were contradictory and several of them focused on issues unimportant to the election.
But one person, Nate Silver, used a statistical model that filtered out the noise and focused on the signals. By doing so, he successfully picked the election results for President in all fifty states.
So how did he do it?