Is any member of the Washington Congressional delegation not promoting TPP ? Perhaps Jim McDermott has remained neutral only because he is retiring at the end of 2016 ?
Being a top two primary state, the August 2 primary is likely to be the only opportunity that progressive Washingtonians have to influence any November outcomes.
Although there are no Green Party candidates competing with Murray in the primary (hence there will be none on the November ballot) progressive Democrat Philip Cornell IS competing with Murray in the primary. All Washington State progressives,even Clinton supporters need to vote for Cornell in an effort to land he and Murray, and NO GOP candidate on the November ballot.
Seeing how the other top two primary state, California put two Democrats and NO GOP candidate on the November ballot to fill Barbara Boxer's US Senate seat, Washington can do the same.
Although there are no Green Party candidates running for any other Washington statewide offices, the one Green Party candidate Tyler Myles Vega that I am aware of, is running for Derek Kilmer's seat in the US House of Representatives.