Mike Sullivan served as Governor of Wyoming from 1987-1995. He identifies as a Democrat.
2016
–Endorsed Hillary Clinton (D) for President (lost general election)
–Endorsed Ryan Greene (D) for Representative of Wyoming, At-Large District (lost general election)
2022
–Endorsed Liz Cheney (R) for Representative of Wyoming, At-Large District (lost primary)
The Endorsement Project 