Washington State currently has a domestic partnership law that gives equal rights to this type of union.
In 2009, Referendum 71 (R-71) was accepted by voters and was certified on Dec. 3, 2009. ESSSB 5688 was then effective and provided that for all purposes under state law, state registered domestic partners shall be treated the same as married spouses and that provisions of the act shall be liberally construed to achieve equal treatment, to the extent not in conflict with federal law.
There are two laws because the unions are different, but are under the same category of law. It is just like MS and RA are both autoimmune diseases, but have different symptoms and different names to distinguish them from each other.
Vote "No" on R-74. We do not need another law. There is already one in place.