The 1920 United States House of Representatives election in New Mexico was held on November 2, 1920, to elect the state's at-large representative. Incumbent Republican Benigno C. Hernández chose not to run for re-election to a third term.

1920 United States House election in New Mexico

← 1918 November 2, 1920 1922 →

Nominee Néstor Montoya Antonio Lucero Party Republican Democratic Popular vote 54,672 49,426 Percentage 51.88% 46.90%

County results Montoya:      40–50%      50–60%      60–70% Lucero:      50–60%      60–70%      70–80%

Representative At-large before election Benigno C. Hernández Republican Elected Representative At-large Néstor Montoya Republican

This was the first time republicans won this district in back to back elections. Montoya under performed Warren G. Harding's performance in the concurrent presidential election by about 5 percentage points.