SEATTLE - NOVEMBER 3:  Extra signs rest at the feet of Referendum 71 supporters remind commuters to vote to give same sex couples and domestic partnerships some of the same rights as married couples from atop a Interstate 5 overpass during rush hour on election day November 3, 2009 in Seattle, Washington. Opponents of a law passed by the Washington State Legislature early this year, which granted same sex couples and domestic partners many of the rights enjoyed by married couples, put referendum on the ballot. Getty Images logo Getty Images 3 weeks ago

SEATTLE - NOVEMBER 3: Extra signs rest at the feet of Referendum 71 supporters remind commuters to vote to give same sex couples and domestic partnerships some of the same rights as married couples from atop a Interstate 5 overpass during rush hour on election day November 3, 2009 in Seattle, Washington. Opponents of a law passed by the Washington State Legislature early this year, which granted same sex couples and domestic partners many of the rights enjoyed by married couples, put referendum on the ballot.