45 states have acted to ban gay marriage

Forty-five states have acted to define traditional marriage in ways that would ban same-sex marriage.

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Nineteen states have constitutional amendments: Alaska, Arkansas, Georgia, Hawaii, Kansas, Kentucky, Louisiana, Michigan, Mississippi, Missouri, Montana, Nebraska, Nevada, North Dakota, Ohio, Oklahoma, Oregon, Texas and Utah.

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Twenty-six states have enacted statutes but not constitutional amendments: Alabama, Arizona, California, Colorado, Connecticut, Delaware, Florida, Idaho, Illinois, Indiana, Iowa, Maine, Maryland, Minnesota, New Hampshire, North Carolina, Pennsylvania, South Carolina, South Dakota, Tennessee, Vermont, Virginia, Washington, West Virginia, Wisconsin and Wyoming.

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Five states have not taken either action: New Jersey, New Mexico, New York, Rhode Island and Massachusetts.