Interestingly, a similar bill went through Colorado about 12 years ago. The goal of the bill was simply to add sexual orientation to the growing list of things that you could not be discriminated for. It would have provided homosexuals the right to rent an apartment, just like everyone else. The conservative element in the state started a huge disinformation campaign against the bill. They claimed that the bill would offer homosexuals "special rights". And nobody wants homosexuals to have "special" rights, do they? Even though the real goal of the bill was to prevent homosexuals from being categorically deprived of their basic rights.
After giant media flame wars and much mass confusion, the vote went just like it does in every other state. The bill passed in every city with more than 100,000 people. And failed miserably everywhere else. Therefore, in Colorado, it is perfectly legal to not give a gay man a job, simply because he is gay. I think Washington might have the same problem. Seattle and Bellingham and the Microsoftian suburbs are pretty liberal, and would probably be in favor of such a bill. And all the loggers of southern Washington and rednecks of eastern Washington will side with the damn reverend. Watch out for a close vote.
Next, we'll start denying rights to everyone who has ever had anal sex. And then everyone who has bought porn. And then everyone with a tattoo. And then everyone who has ever written/thought/said the word 'fuck'. From there, the downward deadly spiral cannot be stopped, and this country will degenerate into a black hole of rational thought where only castrated men can survive. Is that what we want?