South Dakota


Anti-relationship recognition constitutional amendment


State advocacy groups are working toward fairness for all of South Dakota's families by overturning a constitutional amendment that prohibits relationship recognition for same-sex couples in the state.


In 2006, South Dakota voters approved Amendment C, a constitutional amendment that bans the state from recognizing or performing marriages, civil unions, or domestic partnerships between same-sex couples.


  • Equality South Dakota is a statewide advocacy organization dedicated to achieving equality for all people with respect to their sexual orientation and gender identity.
  • Freedom to Marry is the campaign to win marriage for same-sex couples nationwide.
  • Human Rights Campaign is the United States' largest national lesbian, gay, bisexual and transgender civil rights organization. 


Support for the freedom to marry has increased dramatically in the past 8 years, with 45% of the state's residents now supporting marriage. In 2004, just 24% were supportive. (Williams Institute, 2012)   


According to The Williams Institute's analysis of the 2010 U.S. Census, 714 same-sex couples are living in South Dakota, representing 2.2 same-sex couples per 1,000 households.

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Resources Related to South Dakota

Pew Poll Finds Growing Support for Freedom to Marry Among Evangelicals, Majority Support Among Youth

A comprehensive Pew poll found majority support for the freedom to marry among young people, college graduates and Catholics, with growing support among all other religious categories.

South Dakota Census Snapshot

Demographic and economic information about same-sex couples and same-sex couples raising children in South Dakota.

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Groundbreaking research showing a huge increase in same-sex couples identifying themselves as "unmarried partners".

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