New Mexico's 3rd congressional district serves the northern half of New Mexico, including the state's Capital, Santa Fe. The district has a significant Native American presence, encompassing most of the New Mexico portion of the Navajo Nation, situated in the northwest corner of the state, and most of the Puebloan peoples reservations. The current Representative is Democrat Teresa Leger Fernandez.

The 2018 New Mexico gubernatorial election took place on November 6, 2018, to elect the next governor of New Mexico, concurrently with the election of New Mexico's Class I U.S. Senate seat, as well as other elections to the United States Senate in other states, elections to the United States House of Representatives and various local elections.