Washington Post: “West Virginia Gov. Joe Manchin won the Democratic nomination Saturday and will face GOP primary winner John Raese in a special election to fill the open Senate seat held for 51 years by Robert C. Byrd.  In the other state holding a primary Saturday, scandal-tainted Sen. David Vitter (R-La.) easily defeated former state Supreme Court Justice Chet Traylor to win their party’s nomination.  Vitter will face Rep. Charlie Melancon, who won the Democratic primary. Vitter’s prospects in the race had been a matter of much debate since he admitted to a “very serious sin” with a prostitute in 2007.”