Pennsylvania Democratic Senator Bob Casey refuses to concede his race to Republican Dave McCormick, even though U.S. media outlets have called the race.

The Associated Press called the race for McCormick on Nov. 7, projecting that he would defeat Casey by less than 30,000 votes.

Unofficial results for Pennsylvania’s U.S. Senate race have triggered a legally required automatic state recount. Secretary of the Commonwealth Al Schmidt said that vote totals for incumbent Senator Bob Casey and challenger Dave McCormick are within the one-half of 1 percent margin that triggers a mandatory recount under state law.