They are: Connecticut, Iowa, Maine, Maryland, Massachusetts, New Hampshire, New York, Vermont, Washington and the District of Columbia.

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Nine states and the District of Columbia allow same-sex marriage, including Washington, Maryland, Maine, Iowa, New Hampshire, Vermont, Massachusetts, Connecticut, and New York.

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This includes Alaska, Arkansas, Colorado, Florida, Georgia, Kansas, Massachusetts, Maryland, Michigan, Minnesota, Mississippi, Nevada, Ohio, Oklahoma, South Dakota, Tennessee, Virginia, Vermont, Washington, West Virginia, and Wisconsin, as well as the District of Columbia and the Virgin Islands.

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In November, three states -- Maryland, Washington, and Maine -- approved same-sex marriage, adding to the six states and the District of Columbia that already have done so.

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But last November, voters in three states -- Maryland, Washington, and Maine -- approved same-sex marriage, adding to the six states and the District of Columbia that already have done so.

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Nine states and the District of Columbia issue marriage licenses to same-sex couples, including three states -- Maryland, Washington, and Maine -- where voters approved it in ballot initiatives last year.

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The Democratic campaigns now turn their attention to the Louisiana primary and Nebraska and Washington caucuses Saturday, the Maine caucuses Sunday and the so-called Potomac primaries in Virginia, Maryland and the District of Columbia next Tuesday.

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