Minnesota Statutes Domestic Relations (Ch. 517-519A) § 518.02. Voidable marriages

(a) A party lacked capacity to consent to the marriage at the time the marriage was solemnized, either because of mental incapacity or infirmity and the other party at the time the marriage was solemnized did not know of the incapacity; or because of the influence of alcohol, drugs, or other incapacitating substances; or because consent of either was obtained by force or fraud and there was no subsequent voluntary cohabitation of the parties;

(b) A party lacks the physical capacity to consummate the marriage by sexual intercourse and the other party at the time the marriage was solemnized did not know of the incapacity;

(c) A party was under the age for marriage established by section 517.02.