U.S. Senate elections in New Mexico
Elections won
R 11 · D 2738 Senate elections since 1916
Last decided by
10.1 pts2024, Martin Heinrich over Nella Louise Domenici
Closest ever
0.85 pts1934, Bronson Cutting over Dennis Chavez
Longest streak
12 in a rowDemocratic, 1936–1970
Next election
2026Tuesday, November 3, 2026
New Mexico's U.S. Senate seats are held by Democrat Martin Heinrich and Democrat Ben Ray Luján; Heinrich won the most recent race by 10.1 points in 2024. Heinrich has held one seat since 2012 and Luján the other since 2020. The 2024 race put Heinrich ahead of Nella Louise Domenici, 10.1 points clear. Across 38 elections since 1916, Republicans have won 11 and Democrats 27. Of those, the closest was 1934, decided by 0.85 points; the widest 1990, by 45.9 points.
Martin Heinrich D 497,333 · Nella Louise Domenici R 405,978
Tom Udall D 286,409 · Allen E. Weh R 229,097
Tom Udall D 505,128 · Steve Pearce R 318,522
Jeff Bingaman D 394,365 · Allen W. McCulloch R 163,826
Pete V Domenici R 314,193 · Gloria Tristani D 168,863
Jeff Bingaman D 363,744 · Bill Redmond R 225,517
Pete V Domenici R 357,171 · Art Trujillo D 164,356 · Abraham J. Gutmann G 24,230 · Bruce M. Bush L 6,064
Jeff Bingaman D 249,989 · Colin R. McMillan R 213,025
Pete V Domenici R 296,712 · Tom R. Benavides D 110,033
Jeff Bingaman D 321,983 · Bill Valentine R 186,579
Pete V Domenici R 361,371 · Judith A. Pratt D 141,253
Jeff Bingaman D 217,682 · Harrison Jack Schmitt R 187,128
Pete V Domenici R 183,442 · Toney Anaya D 160,045
Harrison Jack Schmitt R 234,681 · Joseph M. Montoya D 176,382 · Ernesto B. Borunda L 1,087 · Malcolm Matt Dillon A 906
Pete V Domenici R 204,253 · Jack Daniels D 173,815
Clinton P. Anderson D 137,205 · Anderson Carter R 120,988
Joseph M. Montoya D 178,209 · Edwin L. Mechem R 147,562
Clinton P. Anderson D 190,654 · William Cowles R 109,897
Dennis Chavez D 127,496 · Forrest S. Atchley R 75,827
Clinton P. Anderson D 111,351 · Edwin L. Mechem R 83,071
Dennis Chavez D 122,543 · Patrick J. Hurley R 117,168
Dennis Chavez D 68,650 · Patrick J. Hurley R 64,632
Carl A. Hatch D 63,301 · J. Benson Newell R 43,704
Dennis Chavez D 103,194 · Albert K. Mitchell R 81,257
Bronson Cutting R 68,070 · Jethro S. Vaught D 49,913
Holm O. Bursum R 36,868 · Richard H. Hanna D 31,353