Twenty-eight individuals have held the office of governor of New Mexico since the state's admission to the Union in 1912, two of whom—Edwin L. Mechem and Bruce King—served three non-consecutive terms. King holds the record as New Mexico's longest-serving governor, with 12 years of service. William C. McDonald, the first governor, took office on January 6, 1912. The current officeholder is Michelle Lujan Grisham, who took office on January 1, 2019, as the first elected female Democratic governor of the state. Governors are limited to two consecutive terms, but a former governor is eligible for re-election after an intervening governor's term expires.