ESPN's FiveThirtyEight editor-in-chief Nate Silver examines the state of the 2014 Senate races. Silver predicts the Republican party has a 60% chance to take the Senate in 2014. Silver also says there is a 30% chance that the GOP can "win big."



Silver says the Republican party has a 45% shot to take a Senate seat in Michigan, a 35% chance for a seat in Colorado and 30% for a seat in Iowa.