Oregon Marriage Law: What the State Constitution says…

The following marriages are prohibited; and, if solemnized within this state, are absolutely void:

(1) When either party thereto had a wife or husband living at the time of such marriage. (2) When the parties thereto are first cousins or any nearer of kin to each other, whether of the whole or half blood, whether by blood or adoption, computing by the rules of the civil law, except that when the parties are first cousins by adoption only, the marriage is not prohibited or void.
(1) “Domestic partnership” means a civil contract described in ORS 106.300 to 106.340 entered into in person between two individuals of the same sex who are at least 18 years of age, who are otherwise capable and at least one of whom is a resident of Oregon. 106.020 Prohibited and void marriages