- Ben Ray Luján (D) seeks re-election to the Class 2 seat (Domenici → Udall → Luján) — officially filed February 3, 2026, primary June 2, 2026.
- Republican nominee disqualified: Christopher Heuvel failed ballot requirements; only write-in candidate Larry Marker (oil and gas businessman) represents the GOP — no major-party R on the November ballot.
- All four major forecasters rate the race Solid D (Cook) / Safe D (Sabato, Inside Elections, Race to WH) — Luján has $3.7M cash on hand vs. no funded opponent.
- Luján is the first Hispanic senator from New Mexico since Joseph Montoya (who left in 1977) — a historic significance in the only majority-minority continental state.
- Note: Martin Heinrich (D) holds New Mexico's OTHER seat (Class 1) and is not up until 2030 — he was re-elected in November 2024.
Rated Solid D (Cook) / Safe D (Sabato / Inside Elections). Republican disqualified from the ballot — Luján runs effectively unopposed by a major-party candidate. He leads his Democratic primary challenger 69%-9% in April 2026 polling. See all 2026 Senate races →
Candidates
Former NM-03 congressman (2009–2021), DCCC Chair (2015–2019), Assistant Speaker (2019–2021). First Hispanic senator from New Mexico since Joseph Montoya. Filed February 3, 2026 with 11,100+ signatures. Cash on hand: $3.7M. Serves on Agriculture, Budget, Commerce (chairs Communications & Broadband subcommittee), HELP, and Indian Affairs committees. Suffered a major stroke in January 2022 but returned to the Senate in March 2022.
The declared Republican nominee, Christopher Heuvel, was disqualified for failing ballot requirements. Marker is a write-in candidate who must collect 2,351 write-in votes in the June primary to advance to the general. He has run unsuccessfully for Commissioner of Public Lands and other seats. Rated non-competitive by all forecasters.
Self-described democratic socialist who qualified for the Democratic primary via signature collection after failing to reach the 20% threshold at the party convention. Currently suspended from the state Democratic Party. April 2026 poll: Luján 69%, Dodson 9%. Primary date: June 2, 2026.
Race Analysis
The Seat: Domenici → Udall → Luján (Class 2)
New Mexico's Class 2 Senate seat has a rich history. Republican Pete Domenici held it for 36 years (1973–2009), building enormous seniority on the Senate Appropriations Committee and becoming one of the most consequential New Mexico politicians of the 20th century. When Domenici retired due to a frontotemporal dementia diagnosis, Democrat Tom Udall won the open seat in 2008 by 22 points. Udall served two full terms before retiring in 2020, endorsing Ben Ray Luján — his then-House colleague — as his successor.
Luján's 2020 win was the narrowest on this seat in decades. He won 51.73% to Republican Mark Ronchetti's 45.62%, a margin of just 6.1 points — significantly underperforming Biden's 10-point New Mexico margin. Ronchetti's strong showing reflected both his personal appeal (he later ran for governor in 2022, losing narrowly) and a real erosion of Hispanic Democratic support in rural New Mexico. Luján's path to re-election in 2026 was supposed to be a competitive rematch — but the Republican nominee's disqualification ended that scenario.
2026: Effectively Uncontested
Christopher Heuvel, the only Republican to formally file, was disqualified for failing to meet ballot requirements. Write-in candidate Larry Marker, an oil and gas businessman with a history of unsuccessful runs for lower office, must collect 2,351 write-in votes in the June 2 primary simply to appear on the November general election ballot. National Republicans, who had identified New Mexico as a potential pickup opportunity given Luján's narrower 2020 margin, have no viable standard-bearer.
The result is a race unanimously rated Safe D or Solid D by Cook Political Report, Sabato's Crystal Ball, Inside Elections, and Race to the WH. Luján's $3.7 million cash on hand has no organized opposition. His April 2026 Democratic primary poll shows him leading 69%–9% against challenger Matt Dodson. This race will not be competitive in November.
Historical Results — New Mexico Senate (Class 2)
Key Facts — New Mexico Senate 2026
Video: Sen. Luján at Senate Hearing
Forbes Breaking News — Senator Luján at a Senate confirmation hearing, demonstrating his Senate role on the HELP and Commerce committees.
2026 Senate Race Context & National Outlook
The 2026 midterm elections are taking place in an environment shaped by significant economic uncertainty. Trump's Liberation Day tariffs triggered a consumer confidence collapse and PCE inflation surged to 4.5% in Q1 2026. The Trump approval rating stands at 38.1% approve / 59.2% disapprove — among the lowest for any first-year president since modern polling began. The Generic Ballot shows Democrats with a consistent +6.0 advantage, a historically predictive indicator of significant House seat gains.
In the Senate, 33 Class 2 seats are up in 2026. Republicans must defend seats in Georgia, Iowa, North Carolina, Alaska, and Texas, while Democrats defend Nevada, New Hampshire, Michigan, Minnesota, and Virginia. Key battleground races that will determine Senate control include Georgia (Jon Ossoff, D), Iowa (open seat, Ernst retires), Nevada (Jacky Rosen, D), and Alaska (Lisa Murkowski, R). The full Senate map is at the Senate 2026 overview.
Issue-level polling context: The top issues driving 2026 are the economy and tariffs, healthcare, immigration, and Social Security. See the Battleground Tracker for the latest state-level polling and the Trump Policy Tracker for executive action context.
Frequently Asked Questions
Who is running for Senate in New Mexico in 2026?
Ben Ray Luján (D) is seeking re-election to his Class 2 Senate seat. He officially filed on February 3, 2026. The declared Republican nominee (Christopher Heuvel) was disqualified, leaving only write-in Republican Larry Marker. The Democratic primary on June 2, 2026 features Luján vs. Matt Dodson (Air Force veteran, democratic socialist); an April 2026 poll showed Luján leading 69%–9%.
Why is New Mexico rated Solid/Safe Democratic for 2026?
All four major forecasters (Cook, Sabato, Inside Elections, Race to WH) rate New Mexico Solid or Safe D because no credentialed Republican qualified for the November ballot. Harris won the state by ~10 points in 2024. Luján holds $3.7M in cash with no funded opposition.
What seat is Ben Ray Luján running for in 2026?
Luján holds New Mexico's Class 2 Senate seat — the seat previously held by Tom Udall (2009–2021) and Pete Domenici (1973–2009). Martin Heinrich holds New Mexico's OTHER seat (Class 1, won 2012, 2018, 2024) and is not up for re-election until 2030.
