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Forecast · r64-20260730-236b8cdd42f0 · as of 2026-07-30

The House · AZ-01Open seat

Projected resultModel share · middle 80% of simulations · chance to win
DAmish Shah159,746 votes
50.0
RDavid Schweikert154,716 votes
48.4
Other5,114 votes
1.6
remainder

Projected turnout: 319,576 votes · model estimate, not counted votes.

Displayed shares include the model's Other-vote allowance and therefore add to 100%. Interval endpoints are the model's 10th and 90th percentiles, not a polling margin of error.

SURE — · not yet rateable

How reliable is the evidence behind this race's number — not who wins. A safe seat with no polls can score low while its forecast is easy.

No public poll of this race has been fielded yet. SURE rates poll evidence, so it has nothing to rate here — this is an absence of evidence, not a judgement that the evidence is weak.

Limited evidence: zero polls. The fitted race-error distribution widens automatically; no manual score penalty or race override is applied.

Effective poll evidence0.00
Race-specific error SD4.0 points
Historically calibrated 80% half-range±5.7
Model treatmentprovisional widen-only chamber fallback
Fundamentals Environment Polls Money (FEC) Roster settled

SURE v3 — historically calibrated evidence-conditioned uncertainty · generated 2026-07-27. SURE rates the EVIDENCE behind a race's number, not the outcome: a safe seat with no polls can score low while its forecast is easy. Never a second win probability. It changes only idiosyncratic uncertainty, never the center. Senate marginal intervals are historically calibrated under the stated 0-120 day assumptions; House/Governor conditioning is provisional and widen-only until chamber-specific history passes the same gates.

AZ-01 · Arizona
Rating band
Striped = seat changes partyDistrict locator

County map

County view
Projected margin
R+40R+20EvenD+20D+40
Striped = seat changes partyProjected county outcome

Counties colored by the projected margin — the 2024 result shifted by the state's projected swing, summing exactly to the forecast above. Hover a county for its numbers.

County by county

CountyMarginAmish ShahDavid SchweikertTotal
MaricopaD+1.6159,787154,676319,576

Projected — each county's share of THIS district only (split counties count just the votes inside the lines), summing to the forecast above.

State of the race

Call the Map currently has Shah ahead of Schweikert by D+1.6, with a 61 in 100 chance to win. This is an open seat. That result would flip the seat to Democrats. No current nominee-matched poll average is available, so the forecast is leaning on the non-polling evidence shown below.

Open after Schweikert left to run for governor (Sept 2025); contested GOP primary (Chaplik, Trobough, Feely), no clear leader yet.

CTM forecast
Lean D flip · 61 in 100
Seat
Open · projected change
Forecast range
R+6.1 to D+9.3
Daily forecast

How the race is moving

61%D win probability today

Since the Jul 21 edition: margin 0.2 pts toward R · win probability -2 pts D

Estimated two-party vote shareLine = estimate · tint = 80% of simulations
D 50.8%● R 49.2%
Win probabilityProbability in each tracked daily edition
D 61%● R 39%

Tracked editions only. The pale segment marks the time remaining to Election Day; it is not fabricated future data. Hover, tap, or focus a chart and use the arrow keys for each edition's exact values.

How the margin was built

Published Democratic margin+1.599

6 contributions, summing to the forecast D+1.6. Every model adjustment is published here — including candidate-quality shifts. Read how the whole margin is built →

Comparable evidenceFloor 0.05 · precision discount 0.1

TWIN neighbours

TWIN means Typology-Weighted Inference from Neighbors, Call the Map’s comparable-unit matching engine for any kind of race. It borrows poll residuals only—never centers, terrain, or outcomes. Similarity is demographic and behavioural, not geographic, and each contribution decays with similarity distance. Borrowed evidence always has lower precision than a race’s own polling.

Borrowed residual before discount +4.503Published margin contribution +0.098
10/10 governed nearest similar races are available in the published artifact.
RaceRoleSimilarityResidual contributedDirection
CT-02Fellow recipient0.623±0.000 ptsnone
MA-02Fellow recipient0.618±0.000 ptsnone
TX-04Fellow recipient0.593±0.000 ptsnone
PA-06Fellow recipient0.583±0.000 ptsnone
NH-01Fellow recipient0.582±0.000 ptsnone
NY-18Fellow recipient0.576±0.000 ptsnone
TN-05Lender (polled)0.565+9.700 ptstoward D
MI-03Fellow recipient0.565±0.000 ptsnone
CA-02Fellow recipient0.564±0.000 ptsnone
OH-07Lender (polled)0.563+4.600 ptstoward D

Signals at a glance

CTM Partisan Lean Index
R+3.4
Historical match quality
58/100 — How closely this race matches its eight historical analogues; not a win probability.

The Race Feed

1 quote
  1. @azmirror.com · 1d ago

    Read Arizona Mirror's post on Bluesky →

    Open this post on Bluesky ↗
    Why shown
    • curated state newsroom
    • recent Bluesky post
    • named-race match

More coverage and field notes →

Recent polling

No polls yet for this race — the forecast rests on fundamentals only (partisan lean, fundraising, incumbency).

Money & Ads

Money in this race

Explore all spending →
Total supporting$2.5M
Total opposing$3.1M
FEC transactions58

Who does this money help? These are independent expenditures — spending by groups that are not the campaigns and may not coordinate with them. Each dollar is reported either supporting one candidate or opposing another, and both can help the same person, so the table below nets them out per candidate. It lists everyone with reported activity in this cycle's FEC filings — which can include primary candidates who are no longer on the ballot.

CandidateSupporting themOpposing themNet for them
David Schweikert RNominee$6.5K−$6.5K
Amish Shah DNominee$155.7K$2.7M−$2.6M
Marlene Galan-Woods DPrimary field$1.1M$286.5K+$840.2K
Thomas Feely RPrimary field$828.4K+$828.4K
Jonathan Treble DPrimary field$367.1K+$367.1K
Marlene Galan-Woods IPrimary field$88.1$12.9K−$12.8K
Joseph Chaplik RPrimary field$60K−$60K
FEC committee activity

Direct PAC support

$240.5K · 103 transactions
  • Amish ShahNominee$134.5K
  • Marlene Galán-WoodsNot on the ballot$80.9K
  • Jonathan TrebleNot on the ballot$18.6K
  • Rick McCartneyNot on the ballot$6.1K
  • Joseph ChaplikNot on the ballot$500
FEC independent expenditures

Top outside spenders

Support and opposition reported separately

Official FEC independent expenditures. Cycle totals may include primary spending. Direct PAC totals include governed committee contributions and in-kind contributions. Campaign-video embeds are metadata-only editorial context from exact, reviewed channels; inclusion does not establish paid placement. Outside spending and campaign videos have zero forecast weight; direct PAC activity is reporting only.

Comparable past results

On the same ballot in Arizona