 Barack Obama's 2008 presidential campaign signed off on a proposal to share all of its private polling with Silver.After signing a confidentiality agreement, Silver was granted access to hundreds of polls the campaign had conducted.Shortly after "FiveThirtyEight" relocated to "The New York Times", Silver introduced his prediction models for the 2010 elections to the U.S. Senate, the U.S. House of Representatives, and state governorships.