Voters in Washington State have approved a gay-inclusive domestic partnership law, the AP reported.

Referendum 71 expands a 2007 domestic partnership law for a second time, granting gay and lesbian couples all the remaining state-provided rights, benefits and responsibilities of marriage. The law, dubbed the “everything but marriage” law by the media, was approved by lawmakers in the spring.

Social conservatives, who say the law violates a 1998 gay marriage ban ruled constitutional by the state's Supreme Court, collected nearly 138,000 signatures to put the law up for a vote.

The state continues to count mail ballots, but with about 69% of the expected vote counted Thursday, the AP called the election. Referendum 71 is leading 52-to-48 percent.

Voters in Maine faced a similar question Tuesday after social conservatives challenged a gay marriage law approved by lawmakers in the spring and put it up for a vote. Gay activists in Maine, however, lost their bid to keep the law.

Referendum 71 also sparked two lawsuits about transparency and financial disclosure laws, one which is expected to be heard by the Supreme Court.