02-13-2012 Gov. Christine Gregoire of Washington State signed a law allowing same-sex marriage. Opponents mounted a challenge that required voters to approve the statute at a referendum, which they did on November 6. The law took effect on December 6, 2012 and the first marriages were celebrated on December 9. Within a couple of days, more that 600 same sex marriage licenses were issued in King County alone. In the first 9 months of same-sex marriage legalization in Washington state, 7,071 same-sex couples legally entered into a marriage.