2026 • U.S. MIDTERM ELECTIONS
MIDTERM ATLAS 23.0 RACE COMPARISON DESK
● CONNECTING TO FORECAST DATA…
HOUSE DISTRICTS
435
District directory available
SENATE
100
Total seats • 2026 election subset
ELECTION DAY
NOV 3
2026 • Tuesday
FORECAST FEED
CONNECTING
Waiting for source response

UNITED STATES • INTERACTIVE STATE MAP

AKALARAZCACOCTDCDEFLGAHIIAIDILINKSKYLAMAMDMEMIMNMOMSMTNCNDNENHNJNMNVNYOHOKORPARISCSDTNTXUTVAVTWAWIWVWY

Click a state to explore its races. The map is fully embedded and works offline; Alaska and Hawaii are shown as insets.

State outlines are embedded in this file and do not require an internet connection. Shapes are derived from an installed US county boundary dataset, not the latest 2026 Census release. The 435-district directory is complete; district geographic polygons are not included; forecasts load separately when a network connection succeeds.

RACE EXPLORER

SELECT A STATE

Virginia

CONGRESSIONAL DISTRICTS

Choose a district to inspect its identifier. Candidate and poll records require verified data imports.

2026 LIVE FORECAST CENTER

Polling Forecast model • forecasts are not vote counts or official election results

HOUSE DISTRICTS LOADED
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SENATE RACES LOADED
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GOVERNOR RACES LOADED
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LATEST SOURCE UPDATE
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EMBEDDED VERIFIED SNAPSHOT • OCTOBER 26, 2026

National control outlook

This snapshot is a reported forecast from Nate Silver’s FLIPR model, not a Polling Forecast API response, not an average, and not an election result. It remains visible without internet access.

DEMOCRATIC HOUSE CONTROL CHANCE
95%
Reported Oct. 26 • Silver / CNN
DEMOCRATIC SENATE CONTROL CHANCE
75–79%
Reported Oct. 26 • Silver / CNN
CURRENT SENATE COMPOSITION
53–47
Republican–Democratic caucus alignment
ELECTION DATE
NOV 3
Actual results not connected

Sources: Oct. 26 report on Silver’s forecast · Reuters Senate overview. Snapshot will not silently update. The separate API panel below attempts live data.

OFFLINE DATA IMPORT

Download a JSON forecast dataset from Polling Forecast's official downloads, then select it below. Import runs locally in your browser; no server connection required.

Supported datasets: house, senate, governors, polls. Import one file at a time.

Checking locally saved forecasts…

CONGRESSIONAL CONTROL CENTER

Calculated from loaded race-level model probabilities; not official results and not a full joint control simulation. Individual races are correlated.

HOUSE • EXPECTED D SEATS
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Awaiting 435 races
HOUSE • EXPECTED R SEATS
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Simple sum of model probabilities
SENATE • 2026 RACES
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Awaiting 35 races
MOST COMPETITIVE
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D win probability 40–60%

Closest House races

Load House forecasts to see the rankings.

Closest Senate races

Load Senate forecasts to see the rankings.

Expected seats are a sum of race probabilities, not the probability of controlling a chamber. Senate summary covers only seats contested in 2026; it does not include holdover senators.

HOUSE SWING LAB

Sensitivity analysis using loaded district forecast margins. Move the national Democratic margin uniformly; this is a hypothetical scenario, not a model forecast. Race-level win probabilities are not recalculated.

PROJECTED D DISTRICT WINS
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Margin-based, not expected seats
PROJECTED R DISTRICT WINS
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435 minus Democratic wins
HOUSE MAJORITY
—
218 seats needed
FLIPPED FROM BASELINE
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Relative to zero-point scenario

Import 435 valid House district margins to enable sensitivity analysis.

RACE COMPARISON DESK

Compare two loaded races side by side. Only imported or successfully retrieved records are used; no estimated values are inserted.

Load forecast records to compare races.

ELECTION-NIGHT RESULTS DESK • SOURCE-LABELED IMPORT

Separate from forecasts. Import actual reported vote totals from a trusted provider once available. Imported figures are not independently authenticated by Midterm Atlas. No results are preloaded.

Required columns: race_id,office,state,dem_votes,rep_votes,reporting_pct. Optional: other_votes,status,updated_at. Office: house, senate, governors. Race IDs must be unique. Vote counts are nonnegative integers; reporting_pct is 0–100. Results marked called are never inferred from vote totals.

No election results imported. Awaiting verified election-night reporting.

IMPORTED RACES
0
VOTES IN IMPORTED RACES
—
CALLED RACES
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SOURCE
None

RESULTS INTEGRITY & REPORTING MONITOR

Computed only from user-imported vote records. Race calls are provider labels, not decisions by Midterm Atlas. A reporting percentage is not a vote-count completeness guarantee.

UN-CALLED RACES
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REPORTED 90%+
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CLOSEST UNCALLED
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DATA WARNINGS
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Awaiting election-night data.

RESULTS UPDATE TRACKER

Compares each newly imported results file against the preceding import saved in this browser. Changes are observations from user-supplied records, not verified vote corrections or evidence of wrongdoing.

Import two successive files to compare changes.

DATA QUALITY & SOURCE AUDIT

Automated checks distinguish loaded, valid, and duplicate records. Forecasts are not official vote counts.

Awaiting datasets.

Connecting to published forecast API…

Source: Polling Forecast • CC BY 4.0 for its model output. Individual polls may have different licenses. Auto-refresh every 15 minutes while the page is open. Last successful fetch and source dates are shown separately.

OFFICIAL 2026 ELECTION RESULTS

AWAITING ELECTION DAY • November 3, 2026. No official vote-count provider is connected. Forecasts and polls are never presented as reported votes.

HISTORICAL COMPARISON

Compare 2024 results to 2026 only after verified historical data is loaded. The map is not shaded by historical partisan outcomes because none are embedded.

Historical election result dataset: not installed.

COMPARISON DESIGN

2024 House district results
2024 presidential state results
2026 official results when certified

HOUSE CONTROL • HYPOTHETICAL

Assigning Democratic seats automatically assigns the remainder to Republicans. This simplified two-party scenario does not represent a forecast or account for vacancies/independents.

218

SENATE CONTROL • HYPOTHETICAL

Simplified 100-seat, two-party scenario; actual Senate control can depend on independents and the vice president.

50

SIMULATOR NOTES

All simulator values are hypothetical inputs, not real polling, forecasts, or election results.

House majority: 218 seats when all 435 seats are filled.

Senate majority: 51 votes, or 50 plus the vice president's tie-breaking vote when applicable.