When Nate Silver makes a prediction, it's worth paying attention. Using a sophisticated algorithm that takes into account polling data, generic ballot numbers, and the president’s approval rating among other factors, the former Chicagoan and proprietor of the blog FiveThirtyEight correctly predicted all 35 U.S. Senate contests in 2008. On Friday, he released his first batch of House rankings for the 2010 cycle. The results weren't pretty for Democrats; the model gives Republicans a roughly 66 percent chance of retaking the lower chamber. In Illinois, freshmen Democrats Bill Foster and Debbie Halvorson are both favored to lose. Democrat Dan Seals does, however, have a slight advantage in the race for the 10th Congressional District open seat. Read the full results here.