Conversation so far:
How did the 2008 elections affect Nate Silver?
Shortly after the November 4 election, Jim Caple observed, [R]ight now Nate Silver is exhausted. He barely slept the last couple weeks of the campaign“
Who did Nate Silver predict would win the 2008 election?
Nate Silver predicted Barack Obama would win the 2008 election.

Question: How did he make his predictions?
Self-contained rewrite: How did Nate Silver make his predictions for the 2008 election?