María Adelina Isabel Emilia "Nina" Otero-Warren was an American woman's suffragist, educator, and politician. Otero-Warren created a legacy of civil service through her work in education, politics, and public health. She became one of New Mexico's first female government officials when she served as Santa Fe Superintendent of Instruction from 1917 to 1929. Otero-Warren was the first Latina to run for Congress, running unsuccessfully in 1922 as the Republican nominee to represent New Mexico's at-large district in the U.S. House of Representatives.

From statehood in 1912 to 1969, New Mexico did not use congressional districts for its representatives to the United States House of Representatives. Instead, it elected its representatives statewide at-large.