The Forecasting MachineOpen interactive report

Will Ben Ray Luján (D) win the New Mexico U.S. Senate election on November 3, 2026?

Resolves Yes if Ben Ray Luján (D) is certified as the winner of the New Mexico U.S. Senate seat contested on November 3, 2026, and No otherwise. If the contest is not decided on election night — because of a runoff, a ranked-choice tabulation, or a recount — it resolves on the final certified result. Declared candidates: Ben Ray Luján (D); Larry Marker (R).

Forecasted on

Forecast probabilities

  • Yes: 98.8%
  • No: 1.2%

Reasoning

Luján is a strong favorite: the forecast assigns him a 98.8% chance of winning, against 1.2% for a loss. His large, steady polling lead and substantial structural advantages outweigh the real but limited uncertainty from single-pollster evidence and the possibility of an unusual late disruption.

Yes — 98.8%: A wide lead with few plausible paths to an upset

The clearest signal is the Albuquerque Journal’s polling: Luján led Larry Marker 53%–38% in August and 53%–37% in October. That is a stable advantage across two survey waves, not independent confirmation from multiple pollsters; still, the October margin was far beyond the poll’s 2.9-point margin of error. Luján’s lead also extended to independents and nearly every region of the state, making a reversal less likely than the topline alone might imply [a6, a7, a8] [e1, e7].

The candidates’ resources and profiles point in the same direction. Marker qualified for the ballot after receiving more than 31,000 write-in votes, evidence of a meaningful Republican base, but he remains little known and has little campaign money: about $11,850 on hand compared with Luján’s $4.4 million. Republicans’ initial failure to field a candidate, combined with Luján’s incumbency and established profile, makes a late Marker surge difficult to see [a1, a9] [e2, e3]. Luján has also remained visible locally, including through campaign advertising and advocacy on issues affecting New Mexicans [e5, e44, e45].

The state’s record favors Luján without making the outcome automatic. No Republican has won a New Mexico Senate race since 2002; Luján won by six points in 2020, and Martin Heinrich by about ten in 2024. New Mexico’s low Trump approval—32% in the August survey—adds a state-specific headwind for Marker, while late-October national polling generally showed Democrats ahead on the generic ballot [a7, a8] [e127, e130, e131]. Early voting and voter-history figures also tilt toward Democrats, though neither guarantees how the full electorate will vote [e50, e97].

No — 1.2%: Polling uncertainty and rare disruptions

The main caution is that both reported state polls came from the Albuquerque Journal. Their consistency is reassuring, but it does not rule out a shared polling error or a turnout pattern that differs from the surveys. New Mexico has also produced competitive Senate races, and Marker’s primary vote shows that he can mobilize some Republican support [a6, a7, a8] [e2].

A major late event, such as a serious health crisis or an unexpected campaign shock, could also change the picture. Luján’s 2022 stroke is part of his history, but the available information describes recovery and advocacy rather than a current campaign liability. These possibilities justify leaving a nonzero chance of defeat, not treating it as a likely outcome [a7, a8].

Why the probabilities are so lopsided

The evidence is strongest when considered together: a stable lead of roughly 15 points, broad support across the state, a large financial gap, a weakly positioned challenger, and a favorable state and national environment. Polling uncertainty and rare events remain, but there is no reported sign of a late shift large enough to erase that advantage. That balance supports 98.8% Yes and 1.2% No.

Update summary

Late national polls continued to show Democrats leading on the generic ballot, and a ratings update moved several other races toward Democrats, but neither supplies meaningful new evidence about this New Mexico contest [e128, e131, e133]. With Luján’s state-level polling picture unchanged, the outlook remains stable.

Cited evidence