# 2006 South Dakota Amendment C

South Dakota Amendment C of 2006 is an amendment to the South Dakota Constitution to make it unconstitutional for the state to recognize or perform same-sex marriages, or to recognize civil unions, domestic partnerships, or other quasi-marital relationships regardless of gender. The referendum was approved on 7 November 2006 by 52% of the state's voters.
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The text of the adopted amendment states:
   Only marriage between a man and a woman shall be valid or recognized in South Dakota. The uniting of two or more persons in a civil union, domestic partnership, or other quasi-marital relationship shall not be valid or recognized in South Dakota.
The amendment was rendered void by Obergefell v. Hodges, a US Supreme Court decision that legalized same-sex marriage nationwide.

## Legislative history

On January 24, 2005, the South Dakota House of Representatives passed, by a vote of 53 in favor and 16 against, South Dakota House Joint Resolution 1001 (SD HJR 1001). On February 14, 2005, the South Dakota Senate passed, by a vote of 20 in favor and 15 against, HJR 1001, which put it on the ballot for the 2006 general election.

## Results

On November 7, 2006, at 7:00 PM CT, polls closed thought the entire state of South Dakota. Between 9:00 PM and 11:00 PM CST, Amendment C was projected to pass.

## Pre-decision opinion polls

| Date of opinion poll | Conducted by | Sample size | In favor | Against | Undecided | Margin | Margin of Error |
| Late October 2006 | Zogby Poll | ? | 50% | 45% | 5% | 5% pro | ? |
| October 2006 | KELO-TV / Argus Leader Poll | ? | 51% | 42% | 7% | 9% pro | ? |
| 2006 | Argus Leader Poll | ? | 46% | 47% | ? | 1% con | ? |
| 2006 | ? | ? | 41% | 49% | ? | 8% con | ? |