So long as the Dems in WA doesnt introduce an income tax, there is no reason to vote GOP at the state level.
And this is very much the truth. There is nothing in the GOP platform on social, fiscal or foreign policy that appeals to the state. I would even suspect that a Democratic governor introducing a state income tax wouldn't be enough, as it would likely be repealed immediately via Eyeman-sponsored ballot measure.
These are all good points. Looks like these days Washington is probably even less likely to switch to the Republicans than Massachusetts. The Republicans in Massachusetts (Charlie Baker, Paul Cellucci, William Weld) would be Democrats in much of the rest of the country. Meanwhile, the Republicans in Washington are as conservative as anyone in the party--fine for Eastern Washington but with little appeal in the dominant Seattle-Tacoma-Olympia sector.