Washington United for Marriage

Washington United for Marriage was a coalition of secular and religious organizations in Washington State involved in lobbying the State Legislature to provide marriage for same-sex couples. The organization was founded in 2011, and formed to secure passage of a bill in the Washington legislature calling for same-sex marriage, and to then defend such a measure should a statewide referendum be launched to challenge it.

Source: Wikipedia — Washington United for Marriage (CC BY-SA 4.0)