Representative Rick Larsen for Obama

The superdelegate score in Washington State just got more even:

Rep. Rick Larsen, D-Wash., on Thursday became the third member of Washington's congressional delegation to endorse Illinois Sen. Barack Obama for the Democratic presidential nomination.

The no-holds-barred campaign leading up to the North Carolina and Indiana primaries showed that Obama is "tough and resilient," that he can "take a punch," and yet successfully deliver his message to the American people, said the four-term congressman from northwest Washington.

"Tuesday was a game-changer even though Obama didn't win both states," Larsen said.

Larsen joins Reps. Adam Smith and Brian Baird, D-Wash., in the Obama camp. Smith has chaired the Illinois senator's campaign. Gov. Christine Gregoire has also endorsed Obama.

Endorsers of Hillary Clinton in Washington State include Representative Jay Inslee, Ron Sims, and Senators Patty Murray and Maria Cantwell, all of them superdelegates. It doesn't appear that any of them are going to change, although Cantwell, Murray, and Inslee have all hinted they will have no trouble happily supporting Barack Obama if he is the nominee.