Candidates' party affiliations obtained from the The Legislative Manual of the State of Minnesota 1891. https://babel.hathitrust.org/cgi/pt?id=mdp.39015054508455&seq=634
Source for Popular Vote data: Minnesota Historical Society, "Governor," Abstract of Votes Polled in the State of Minnesota, at the General Election held in the several Counties of said State, on the first Tuesday after the first Monday, being the Fourth day of November, A.D. 1890 (St. Paul, 1890)