"Of states without constitutional amendments on marriage, 45% (nine of 20) eventually recognize same-sex marriage, either by direct judicial decree, by legislative action, or by a ruling requiring that same-sex marriages from other states be treated as valid," the National Organization for Marriage, which opposes same-sex marriages, said in a statement. "Among the 30 states with marriage amendments, none have been repealed."
Massachusetts, Connecticut, Iowa, Vermont, New Hampshire, New York and the District of Columbia issue marriage licenses to same-sex couples. In February, Washington Gov. Christine Gregoire signed a bill that would legalize same-sex marriage beginning in June, but opponents there have pledged to block the bill and called for voters to decide the issue.
Maryland Gov. Martin O'Malley signed into law a bill that permits same-sex couples to wed in that state as of January 1, 2013.