FutureBallotU.S. election forecasts, with every number traced to its source

New Mexico · Senate

election 2026-11-03 · forecast as of 2026-10-01 · margins and probabilities are for Ben Ray Luján

Likely D
86%
Ben Ray Luján
Democrat
14%
Larry Marker
Republican
Expected margin and its 90% range
R+40R+20R+10EvenD+10D+20D+40D+11.9

Who is running?

Ben Ray Luján (Democratic), Larry Marker (Republican). The margin below is Ben Ray Luján minus the other candidate in the main contest; the rest are on the ballot and not in it.

The race, in brief

Democratic incumbent Ben Ray Luján is seeking a second term in New Mexico. He was elected in 2020 after representing the 3rd congressional district from 2009 to 2021. The text says Republicans have not won a Senate election in the state since 2002 and gives no presidential results. The state profile is on file in the facts.

Luján won the June 2 Democratic primary against Matt Dodson, a U.S. Air Force veteran, with 84.2% (182,360 votes) in the results table; the lead gives 83.7%. No Republican made the primary ballot: Christopher Heuvel, the only one to file, was disqualified, and former oil and gas operator Larry Marker was nominated as a write-in, taking 31,220 votes unopposed. As of June 30, 2026 Luján had raised $8,277,478 with $4,396,754 on hand; Marker had raised $33,525 with $11,850 on hand.

All ten raters listed, including The Cook Political Report (September 23, 2026) and Sabato's Crystal Ball (September 22, 2026), put the race at D. The one general-election poll in the text, Research & Polling Inc. (August 21–28, 2026), has Luján 53%, Marker 38%.

A paragraph quoting a model forecast from the day this brief was written is omitted; the current forecast is at the top of this page.

The facts, each beside its sentence

Incumbent
Ben Ray Luján (D)Democratic incumbent Ben Ray Luján is seeking a second term.
Open seat
noDemocratic incumbent Ben Ray Luján is seeking a second term.
Democratic nominee
Ben Ray LujánBen Ray Luján, incumbent U.S. senator (2021–present)
Republican nominee
Larry Marker (nominated as a write-in)After no Republicans qualified for the primary ballot, Marker was nominated as a write-in candidate.
Democrat's background
U.S. senator since 2021; represented the 3rd congressional district 2009–2021Ben Ray Luján, a member of the Luján political family, was elected in 2020 after serving as the representative for the 3rd congressional district from 2009 until 2021.
Republican's background
former oil and gas operatorHe is being challenged by Republican former oil and gas operator Larry Marker.
Last result
Luján elected in 2020; Republicans have not won a Senate election in New Mexico since 2002Republicans have not won a Senate election in New Mexico since 2002.
Primaries
Primaries June 2. Luján 84.2% (182,360) to Matt Dodson 15.8% in the results table (lead says 83.7%); Marker 31,220 write-in votes, unopposed, after Christopher Heuvel was disqualifiedcandidate: Ben Ray Luján (incumbent) votes: 182,360 percentage: 84.2
Raters
All ten raters listed (Cook, Decision Desk HQ, The Economist, FiftyPlusOne, Fox News, Inside Elections, RealClearPolitics, Sabato's Crystal Ball, Silver Bulletin, Split Ticket): DThe Cook Political Report D September 23, 2026
Money
As of June 30, 2026: Luján raised $8,277,478 with $4,396,754 on hand; Marker raised $33,525 with $11,850 on hand|Larry Marker (R) $33,525 $21,675 $11,850
Also
One general-election poll: Research & Polling Inc. (Aug 21–28, 2026, 516 LV) Luján 53%, Marker 38%Research & Polling Inc. August 21–28, 2026 516 (LV)
The only Republican to file, Christopher Heuvel, was disqualified; Marker qualified as a write-in by collecting signatures before March 17Christopher Heuvel, the only Republican to file for the race, was disqualified for failing to meet the requirements to appear on the ballot.
The text says Luján voted with Trump's stated position 5% of the timeLuján has been an outspoken critic of Donald Trump, having voted in line with Trump's stated position only 5% of the time.

Not in the source: The facts carry no forecast basis.; No presidential or previous Senate results are given as numbers.; facts.candidates marks Luján as incumbent: false, although the text names him the incumbent.; The Democratic primary share differs between the lead (83.7%) and the results table (84.2%).; Ratings are given only as 'D' with no Lean/Likely/Safe.

Read from the district's section of Wikipedia's state page (CC BY-SA), archived as 3e6b34d999f5; written by claude-fable-5-1 (batch reader) on 2026-09-30 and checked mechanically: every quote occurs verbatim in the archived text, every number in the brief occurs in the inputs. No probability here is the reader's.

Who holds the seat now

Martin Heinrich (Democrat), in this chamber since 2013, 3 terms, class 1 (term ends 2031). Committees: Senate Committee on Appropriations; Senate Committee on Energy and Natural Resources (Ranking Member); Joint Economic Committee; Senate Select Committee on Intelligence.

Ben Ray Luján (Democrat), in this chamber since 2021, 1 term, class 2 (term ends 2027). Committees: Senate Committee on Agriculture, Nutrition, and Forestry; Senate Committee on Commerce, Science, and Transportation; Senate Committee on Finance; Senate Committee on Indian Affairs; Senate Committee on the Budget; United States Senate Caucus on International Narcotics Control.

From the congress-legislators dataset (CC0), archived as ae8cb9477c48. For a Senate race this lists both of the state's senators; the one whose term ends in the election year holds the seat on the ballot. For a House district redrawn for 2026 it is the member elected under the old lines with this number, who may be running elsewhere; the dossier above names who is running here.

The money

CandidateRaisedCash on handPAC shareSelf-fundedOutside $ forOutside $ against
Lujan, Ben Ray (DEM)
incumbent
$5,626,629$4,396,75431%0%$319$0
Marker, Larry E (REP)
challenger
$33,525$11,8500%0%$0$0
Dodson, Matt (DEM)
challenger · not on our roster
$32,743$1830%34%$0$0

FEC bulk candidate summaries through June 30, 2026; $319 of independent expenditures for or against these candidates this cycle (FEC Schedule E, types 24E and 24A), which is the parties' and outside groups' own revealed view of whether this seat is in play.

How it has voted for president

Two-party margin201620202024
PresidentD+9.3D+11.0D+6.1

A shift of 3.2 points toward the Republicans from 2016 to 2024. county returns summed; MEDSL county file (2016), an MIT-licensed county file (2020, checked against certified state results) and MEDSL precinct returns (2024). For a district split across counties this is an estimate, and where the state published the exact 2024 figure for these lines, that exact figure is the one the model uses.

The state in numbers

MeasureStateAverage stateDifference
Bachelor's degree or higher, 25+, 202330.2%34.0%-3.8 pts
White, non-Hispanic, 202336.5%66.3%-29.7 pts
Black, non-Hispanic, 20231.8%10.1%-8.3 pts
Hispanic or Latino, 202348.1%12.9%+35.3 pts
Asian, non-Hispanic, 20231.6%4.4%-2.8 pts
Foreign-born, 20239.2%9.6%-0.4 pts
Median age, 202339.239.1+0.12
Median household income, 2023$62,125$77,633$-15,508
Median home value, 2023$232,200$314,132$-81,932
Owner-occupied homes, 202369.3%67.4%+2.0 pts
Unemployment (ACS), 20236.0%4.8%+1.2 pts
Federal government workers, 20236.9%3.0%+3.8 pts
Work from home, 202311.0%12.3%-1.3 pts
Households on SNAP, 202318.7%11.1%+7.6 pts
Households with Social Security income, 202335.8%32.1%+3.6 pts
Households with public assistance income, 20233.6%2.6%+1.0 pts
Moved in from another state, past year, 20233.1%2.9%+0.3 pts
Gini index, 20230.480.47+0.01
Unemployment, latest month (BLS), 2026-075.6%4.0%+1.6 pts
Change in unemployment, past 12 months, 2026-07+0.6 pts-0.1 pts+0.7 pts
Change since the last election (24 months), 2026-07+0.2 pts-0.1 pts+0.3 pts
Per-capita personal income (BEA), 2024$58,249$70,662$-12,413
Per-capita income growth since 2019, nominal, 202434.8%32.4%+2.4 pts
Government and other transfers, share of income, 202425.3%19.4%+5.9 pts
Social Security, share of income, 20227.2%6.1%+1.1 pts
Medicare, share of income, 20224.7%4.4%+0.4 pts
Medicaid, share of income, 20227.5%3.8%+3.8 pts
SNAP, share of income, 20221.5%0.6%+0.9 pts
Earned Income Tax Credit, share of income, 20220.5%0.3%+0.2 pts
Veterans' benefits, share of income, 20221.3%0.9%+0.4 pts
Federal civilian jobs, share of all jobs, 20222.6%1.5%+1.1 pts
Military jobs, share of all jobs, 20221.6%1.2%+0.5 pts

ACS 5-year state tables; BLS county unemployment and BEA county income, transfers and jobs summed to the state. Every figure is a named column of a named public-domain table, archived before it was read.

Who is ahead, and by how much?

+12.0
NOWCAST
run 6def62ae · single_race_latent/0.8.1 · as of 2026-10-01
+15.9
ELECTION-DAY
run ca0acbc3 · single_race_latent/0.8.1 · as of 2026-10-01

Two numbers because they answer two questions. The nowcast is where opinion stands; the election-day forecast is where it is likely to end up.

How likely is each to win?

88%
Ben Ray Luján
run 6def62ae · single_race_latent/0.8.1 · as of 2026-10-01
92%
Ben Ray Luján
run ca0acbc3 · single_race_latent/0.8.1 · as of 2026-10-01

Monte Carlo error is ±0.2 points. A change smaller than that is simulation noise rather than news, and this page will not describe it as movement.

How wide is the range?

Nowcast: 90% of simulations fall between -5.0 and +29.0 points. Election day: -2.3 to +34.2. The election-day interval is 2.5 points wider, which is the 33 days of movement still to come.

What is the uncertainty made of?

Total sd 11.16 points, made of latent opinion 62%, race-specific polling error 20%, drift to election day 13%, correlated polling error 5%. The decomposition is stored with the forecast rather than reconstructed, so a probability whose dominant input is a placeholder is visibly that.

What evidence is this built on?

1 polls, most recent 2026-08-28. 100% verified against a primary source.

What changed since the last run?

tied-3+31single_race_latent/0.4.0single_race_latent/0.5.0single_race_latent/0.6.0single_race_latent/0.7.0single_race_latent/0.8.0single_race_latent/0.8.125 Sep1 Oct

Shaded band is the 90% interval, line is the central estimate, positive is Ben Ray Luján ahead of Larry Marker. Over 15 stored forecasts the central estimate moved +1.8 points. There were 6 specification changes (marked on the axis) and no new polls arrived over this window — so every movement in this chart is a change to the model, not a change in the race.

Since 2026-10-01: margin +0.00 points, win probability +0.0 points, on +0 polls.

Not answered here: why it changed. Splitting a move into new polls, time and specification means re-running the earlier model against the later inputs -- two extra posterior fits -- so it is computed on a cadence (scripts/attribute_forecasts.py) rather than while you wait. This pair of runs has not been decomposed yet. The size of the move is shown; the cause is not guessed at.

How has this model done before?

Measured on 230 forecasts across 230 races in cycles 2016,2018,2020,2022,2024: mean absolute error 4.56 points, Brier score 0.0543. The nominal 90% interval contained the result 94% of the time, the 80% interval 84%, and the 50% interval 47%. Read that with care: a national polling miss moves every race in a cycle at once, so the sample size for a question about the intervals is 5 cycle(s), not 230 forecasts. Per cycle -- bias +1.644 pts; 2016: n=43 bias=+4.68 cov90=0.860; 2018: n=63 bias=-0.52 cov90=1.000; 2020: n=35 bias=+5.44 cov90=0.886; 2022: n=54 bias=-0.60 cov90=0.944; 2024: n=35 bias=+1.48 cov90=1.000.

Where did every number come from?

Nowcast run 6def62ae-780b-4d96-9873-2ea25f47dd0d and election-day run ca0acbc3-53ef-4147-87bb-45ec66832367, model single_race_latent/0.8.1 at commit bdf7e83107c17a2399efe61a44ef1bbee48f9284, seeds 20260924 and 20260924.