Pietro Vichi "Pete" Domenici was an American attorney and politician who served as a United States Senator from New Mexico from 1973 to 2009. A member of the Republican Party, he served six terms in the Senate, making him the longest-tenured U.S. Senator in the state's history. To date, Domenici is the last Republican to be elected to the Senate from New Mexico. He was succeeded by Democratic U.S. Representative Tom Udall.

Thomas Stewart Udall is an American diplomat, lawyer, and politician serving as the United States Ambassador to New Zealand and Samoa since 2021. A member of the Democratic Party, he served as a United States senator from New Mexico from 2009 to 2021. Udall also served as the U.S. representative for New Mexico's 3rd congressional district from 1999 to 2009 and New Mexico Attorney General from 1991 to 1999. Born in Tucson, Arizona to the Udall family, he is the son of former U.S. Representative and Secretary of the Interior Stewart Udall and the nephew of former U.S. Representative Mo Udall. His cousin is Mark Udall, who concurrently served alongside him in the Senate representing the neighboring state of Colorado.