Kansas Proposed Amendment 1 of 2005 is an amendment to the Kansas Constitution that makes it unconstitutional for the state to recognize or perform same-sex marriages or civil unions. The referendum was approved by 70% of the voters. The amendment states: (a) The marriage contract is to be considered in law as a civil contract. Marriage shall be constituted by one man and one woman only. All other marriages are declared to be contrary to the public policy of this state and are void.