In the Democratic primary for the nomination for the U.S. Senate, former U.S. Rep. Joe Sestak of Delaware County extended his lead from 21 percent in February to 31 percent in March. Former state Environmental Secretary Katie McGinty showed little improvement, coming in at 14 percent. Braddock Mayor John Fetterman ranked at 7 percent. Joe Vodvarka, a semiretired manufacturer from Allegheny County, had no support.