Short Answer

Senator Mark Warner is expected to win the 2026 Virginia Senate race, supported by his significant fundraising advantage, consistent polling leads, and Virginia's history of not electing a Republican to the U.S. Senate since 2002; the market prices this outcome at 98.0%.

1. Market Behavior & Drivers

The market's slight uptick to 98% appears to follow the confirmation of incumbent Mark Warner as the Democratic nominee. Warner ran unopposed in the primary on August 4, 2026, removing any residual uncertainty about his candidacy. This formalization of an expected outcome likely accounts for the contract's subsequent move from 97% to 98%.
Overall, the market for the Virginia Senate race has been stable and thinly traded. The price has held in a tight range between 97% and 98%, reflecting a strong baseline expectation of a Warner victory. Total volume of just 252 contracts indicates minimal market participation and suggests the price is set by a small number of traders with high conviction, rather than a deep and active pool of capital.
  • Since last update (~28d): Mark Warner's market probability rose +2.4pp, market_led, compressing the edge by -1.4pp.
  • Our confidence score significantly improved by +4.0pp, now at 9.0.
  • The model increased Mark Warner's probability by +1.1pp, contributing to headline movement.
  • Bert Mizusawa's prospects declined, with model and market down -1.1pp and -0.7pp respectively.
  • Democrats likely to win; Senator Warner holds major fundraising and polling leads.
  • Virginia's long Democratic Senate streak and forecaster projections favor Warner.

Who Wins and Why

Outcome Market Model Why
Mark Warner 98.0% 98.2% Incumbent Mark Warner has a significant fundraising advantage and consistently strong polling leads.
Bert Mizusawa 2.1% 1.8% Bert Mizusawa faces a significant fundraising deficit and trails the incumbent substantially in polling.

Current Context

The 2026 Virginia Senate election is set for November 3, 2026, featuring Democratic incumbent Mark Warner and Republican nominee Bert Mizusawa [1][2][3][4]. Warner ran unopposed for the Democratic nomination on August 4, 2026 [5][1]. Mizusawa secured the Republican nomination on the same date with 51.5% of the vote [5][1]. As of September 9, 2026, election results platforms do not yet show a winner, as the general election has not occurred [2][3][6].
Prediction markets strongly favor Senator Mark Warner for re-election. Political forecasting models consistently rate the race as Safe Democratic or Solid Democratic [1][7][8]. This assessment is driven by Warner's significant fundraising advantage and a history of double-digit victories in statewide elections [1][7][8]. Key dates remaining include the start of early in-person voting on September 18, 2026, the voter registration deadline on October 23, 2026, and the general election on November 3, 2026 [9].
Sources (9)
  1. 12026 United States Senate election in Virginia - Wikipediaen.wikipedia.org
  2. 22026 Virginia US Senate | Live Election Resultsvotes.decisiondeskhq.com
  3. 3Virginia elections, 2026 - Ballotpediaballotpedia.org
  4. 4Mark Moran (Virginia) - Ballotpediaballotpedia.org
  5. 5Virginia Senate Primary Election 2026 Live Results - NBC Newsnbcnews.com
  6. 62026 Virginia US Senate Vote History | DDHQintegration-votes.decisiondeskhq.com
  7. 7Why Mark Warner Will Win: Virginia Senate Odds 2026 | OddsShopperoddsshopper.com
  8. 8Virginia — U.S. Senate — 2026 forecast — Akashicakashic.app
  9. 9Upcoming Elections - Virginia Dept. of Electionselections.virginia.gov

2. Price Chart

Historical Price (Probability)

Outcome probability
Date

3. Market Data

Contract Snapshot

This market resolves the winner of the Virginia Senate race, determined by the officially declared winning party. A 'YES' resolution for a specific candidate's contract occurs if that candidate wins the race, and a 'NO' resolution occurs if they do not win. Trading for this market begins on November 3, 8:00 AM EST, with a maximum payout date of November 3, 2027.

Available Contracts

Market options and current pricing

Outcome bucket Yes (price) No (price) Last trade probability
Mark Warner $0.98 $0.03 98%
Bert Mizusawa $0.03 $1.00 2%

Market Discussion

The 2026 U.S. Senate election in Virginia is scheduled for November 3, 2026, with Democratic incumbent Mark Warner and Republican Bert Mizusawa as the candidates [1]. The winner has not yet been determined as of September 9, 2026 [2]. As of September 2026, prediction markets and forecasting models, including Decision Desk HQ, overwhelmingly favor Mark Warner to win, citing win probabilities around 95-96% and his significant campaign fundraising advantage over Mizusawa [3].

Sources (3)
  1. 12026 United States Senate election in Virginia - Wikipediaen.wikipedia.org
  2. 22026 Virginia US Senate | Live Election Resultsvotes.decisiondeskhq.com
  3. 3Virginia Senate winner? — Compare Odds on 4 Platforms | CoinRithmcoinrithm.com

4. Trust Index

Octagon Trust Index Kalshi 77 Good

Largest single print on SENATEVA-26-D carried 39% of its $5,329 tape (window is 100% of 24h flow; print is 13d old)

Integrity risk· Large trades

How it adds up
Integrity80% of score82Good
Trade quality20% of score56Caution

Includes the cost to trade: a $10,000 order can't be filled here because the order book is too thin.

Trust score77Good

Weighted blend with hard caps — a critically weak safety pillar, or a severe trading anomaly, caps the total regardless of the rest. Full methodology · About the Trust Index

Trust profile
Integrity4 screens run · 6 don't apply
Market integrity
78Good

Outcome is hard to influence

Large tradesTrade signals · medium confidence

Largest single print on SENATEVA-26-D carried 39% of its $5,329 tape (window is 100% of 24h flow; print is 13d old)

Screened clean
Thin-volume movesMoves carried volume Clear
Size patternsNo distribution read Clear
2 screens not run
Outcome control · doesn't apply to this market type
Thin-leg conviction · doesn't apply to this market type
Info fairness
80Good

Structural prior — no screens apply

No suspicious activity on any screen

Screened clean
Information exposureNo concentrated group can know the outcome materially early. Clear
4 screens not run
Move vs. catalyst · doesn't apply to this market type
Longshot repricing · doesn't apply to this market type
Pre-broadcast certainty · doesn't apply to this market type
Cross-venue timing · doesn't apply to this market type
Resolution quality
92Strong

Resolution mechanism is dependable

No suspicious activity on any screen

Resolution rules read: Clear

Liquidity
72Tradeable

Fills fine at modest size

2 contracts · worst first

Bert Mizusawa50
Thin · low confidence

Light recent trading — size may not fill near the screen price.

Book spread 85% vs realized 5%
Mark Warner73
Tradeable · low confidence

Light recent trading — size may not fill near the screen price.

Book spread 2% vs realized 0%
Move quality
64Mostly confirmed

Most moves carried real volume

2 contracts · worst first

Bert Mizusawa64
Mostly confirmed · medium confidence

Volume confirms the move over 24h

Mark Warner—
No significant move (24h)

Price was stable over the last 24 hours.

Rule clarity
100Clear

Counts toward Resolution quality, not here

2 contracts · worst first

Mark Warner100
Clear · high confidence

All checks pass

objective outcome · Clearofficial source · Cleartime boundary · Clear
Bert Mizusawa100
Clear · high confidence

All checks pass

objective outcome · Clearofficial source · Cleartime boundary · Clear
Trade quality
56Caution

Order book is thin

Tradable, but expect execution cost beyond small sizes.

Outcome quality 72 (notional-weighted across 2 scored legs)

$100 order: 1.3c slippage (~76% of a 1.7c contract)

$1,000 order: 2.7c slippage (~159% of a 1.7c contract)

$10,000 order: book too thin to fill

Mark Warner73Market scoreLiquidity73Move quality–Rule clarity100
Why 73
Liquidity
73 · Tradeable · low confidence

Light recent trading — size may not fill near the screen price.

Book spread 2% vs realized 0%
Move quality
No significant move (24h)

Price was stable over the last 24 hours.

Rule clarity
100 · Clear · high confidence

All checks pass

objective outcome · Clearofficial source · Cleartime boundary · Clear
Bert Mizusawa50Market scoreLiquidity50Move quality64Rule clarity100
Why 50
Liquidity
50 · Thin · low confidence

Light recent trading — size may not fill near the screen price.

Book spread 85% vs realized 5%
Move quality
64 · Mostly confirmed · medium confidence

Volume confirms the move over 24h

Rule clarity
100 · Clear · high confidence

All checks pass

objective outcome · Clearofficial source · Cleartime boundary · Clear

underwriting_v1.4 · computed Sep 26, 2026

5. What historical election results and fundraising data underpin the "Safe Democratic" forecast for Mark Warner in the 2026 Virginia Senate race?

Probability of Winning96% (Decision Desk HQ) [1][2][3]
Amount Raised$25,160,578 (as of July 15, 2026) [4]
Last Republican Senate Win in VA2002 [5]
Senator Mark Warner is strongly favored for re-election in 2026. The incumbent is projected as "Safe Democratic" in the Virginia Senate race, with Decision Desk HQ forecasting a 96% probability of victory and a D+18 margin [1][2][3]. This robust forecast stems from Warner's consistent historical electoral performance, a substantial fundraising lead, and a prolonged trend of Democratic success in Virginia's U.S. Senate elections [5]. The forecasting methodology combines 75% 'fundamentals,' such as partisan baseline and financial advantage, with 25% market data, including prediction markets like Kalshi, which priced a Warner win at approximately 96% in August 2026 [5][1][2][3].
Warner's strong electoral history and financial advantage bolster his prospects. He secured re-election victories in 2008, 2014, and 2020, winning the 2020 race by a 12.08-point margin [5][1][2][3]. This is reinforced by broader Democratic success in Virginia, including a 15.36-point win in the November 2025 gubernatorial race. A Republican has not won a U.S. Senate election in Virginia since 2002 [5]. Furthermore, Warner holds a significant financial advantage, having reportedly raised 43 times his opponent's total. Federal Election Commission data for the 2026 cycle shows Warner's committees have raised $25,160,578 and possess $16,114,725 cash on hand as of July 15, 2026 [4].
Sources (5)
  1. 12026 Virginia US Senate Forecast | DDHQvotes.decisiondeskhq.com
  2. 22026 Virginia US Senate Forecast | DDHQnewsnation-votes.decisiondeskhq.com
  3. 32026 Virginia US Senate Forecast | DDHQintegration-votes.decisiondeskhq.com
  4. 4WARNER, MARK ROBERT - Candidate overview - FECfec.gov
  5. 5Why Mark Warner Will Win: Virginia Senate Odds 2026 | OddsShopperoddsshopper.com

6. How might the national political environment, including presidential approval ratings, influence voter turnout and sentiment in the 2026 Virginia Senate election?

Trump Approval Rating33% (April 2026) [1]
VA Senate Race RatingSafe Democrat (Cook Political Report, Sabato's Crystal Ball) [2][3][4]
Mark Warner Win Probability95% to 98% (prediction markets, September 2026) [5][6][3][4][1][7][8][9]
Low presidential approval typically creates a "presidential penalty" in midterm elections. National political environments, especially when presidential approval ratings are low, often result in a "presidential penalty" during midterm cycles, influencing voter turnout and sentiment [10][11][1][12]. This phenomenon tends to boost motivation among the opposition party's base. For instance, President Trump's overall job approval rating was 33% as of April 2026, with his economic performance approval at 30%, signaling potential challenges for candidates of his party in the 2026 midterm cycle [1].
The 2026 Virginia Senate race heavily favors the incumbent. Despite these national political trends, the 2026 Virginia Senate election is strongly skewed towards incumbent Democrat Mark Warner, who is seeking a fourth term against Republican nominee Bert Mizusawa and independent candidate Mark Moran [13][14][15][16][3]. Major forecasters, including the Cook Political Report and Sabato's Crystal Ball, consistently classify the race as 'Safe Democrat,' indicating it is not expected to be a competitive battleground in 2026 [2][3][4]. Warner's strong position is attributed to Virginia's recent electoral history, his significant fundraising advantage, and the absence of a highly competitive Republican challenger [16][3]. Furthermore, prediction markets overwhelmingly favor Mark Warner, with implied win probabilities ranging from approximately 95% to 98% across multiple platforms as of September 2026. Decision Desk HQ forecasts project he will win with a 96% probability [5][6][3][4][1][7][8][9].
Sources (16)
  1. 1Trump's approval on economy falls in AP-NORC poll, showing new warning signs for president | The Associated Pressap.org
  2. 22026 CPR Senate Race ratings - Cook Political Reportcookpolitical.com
  3. 3Why Mark Warner Will Win: Virginia Senate Odds 2026 | OddsShopperoddsshopper.com
  4. 42026 Senate Races: All 35 Seats, Market by Marketpredictionmarketspicks.com
  5. 5Virginia Senate winner? Odds & Predictions 2026 - Kalshikalshi.com
  6. 6Virginia US Senate Winner — Compare Odds on 4 Platforms | CoinRithmcoinrithm.com
  7. 72026 Virginia US Senate Marketsvotes.decisiondeskhq.com
  8. 82026 Virginia US Senate Forecastvotes.decisiondeskhq.com
  9. 92026 Virginia US Senate Forecastnewsnation-votes.decisiondeskhq.com
  10. 10US Elections Review & Analysisqera.decisiondeskhq.com
  11. 11Historical U.S. House results during presidential cycles - Ballotpedia Newsnews.ballotpedia.org
  12. 12Wave elections (1918-2016)/Multiple waves - Ballotpediaballotpedia.org
  13. 132026 United States Senate election in Virginia - Wikipediaen.wikipedia.org
  14. 14U.S. Senate | Voter Guide: 2026 Primary Election - Virginia Mercuryvirginiamercury.com
  15. 15Elections: US Senator - The Virginia Public Access Projectvpap.org
  16. 16What history tells us about the 2026 midterm elections | Brookingsbrookings.edu

7. How do Mark Warner's and Bert Mizusawa's platforms compare on key 2026 policy issues like the economy, healthcare, and energy?

Incumbent's PlatformNational security, technology regulation, infrastructure, healthcare expansion [1][2][3][4]
Challenger's PlatformMilitary readiness, reduced federal spending, tax simplification, local energy control [5][6][1][4]
2026 Race PredictionMark Warner is the heavy favorite to win (as of September 9, 2026) [7][8]
Mark Warner and Bert Mizusawa present contrasting platforms for the 2026 Virginia Senate race. Incumbent Democrat Mark Warner emphasizes a pragmatic record, focusing on national security, technology regulation (particularly AI), infrastructure, and healthcare expansion, including efforts to lower prescription drug costs and protect Affordable Care Act (ACA) coverage [1][2][3][4]. Republican challenger Bert Mizusawa advocates for a conservative "America First" platform, prioritizing military readiness, reduced federal government spending, tax simplification, and local control over energy projects, while opposing what he terms Democratic "Green New Deal" policies [5][6][1][4].
Their policy approaches diverge significantly on economic and social issues. Mizusawa specifically advocates for reduced federal government spending and tax simplification [5][6][1][4]. In contrast, Warner focuses on infrastructure and healthcare initiatives, such as lowering prescription drug costs and protecting ACA coverage [1][2][4]. Campaign finance and polling data indicate Warner maintains a substantial fundraising advantage [9][10][11]. As of September 9, 2026, prediction markets position Mark Warner as the heavy favorite to win the 2026 Virginia Senate race [7][8].
Sources (11)
  1. 1U.S. Senate | Voter Guide: 2026 Primary Election - Virginia Mercuryvirginiamercury.com
  2. 2On The Issues - Mark Warnermarkwarnerva.com
  3. 3Warner unveils AI legislative package targeting data centers, worker...alexandriabrief.com
  4. 4GOP Senate hopefuls face long odds in race to challenge Mark...virginiamercury.com
  5. 5Bert Mizusawa: 2026 Virginia U.S. Senate Polls & Oddspredictionedge.com
  6. 6Q&A with Virginia's three Republican primary candidates for U.S....cvilletomorrow.org
  7. 7Why Bert Mizusawa (R) Will Win: Virginia Senate 2026 | OddsShopperoddsshopper.com
  8. 82026 Virginia Elections, Odds & Candidates | Prediction Edgepredictionedge.com
  9. 92026 Virginia US Senate Forecast | DDHQvotes.decisiondeskhq.com
  10. 10WARNER, MARK ROBERT - Candidate overview | FECfec.gov
  11. 11MIZUSAWA, BERT K - Candidate overview | FECfec.gov

8. Which polling organizations have the strongest track record in Virginia, and what is their current polling data for the Warner vs. Mizusawa Senate race?

Average Poll SpreadWarner +21.3 percentage points (Warner 50.8%, Mizusawa 29.5%) [1]
DDHQ Win ProbabilityMark Warner 96% [2][3][4]
Prediction Market Implied ProbabilityMark Warner 95-98% [5][6][7]
Reputable polling organizations demonstrate a strong track record in Virginia and nationally. Polling firms with established reputations for methodology and predictive accuracy include The Washington Post, Marquette University, and NYT/Siena. Suffolk University is also recognized for its established methodology and accuracy in state and national elections [8][9][10].
Current polling data indicates Mark Warner leads Bert Mizusawa in the 2026 Virginia Senate race. The average polling spread shows Democratic incumbent Mark Warner ahead by 21.3 percentage points, with Warner receiving 50.8% support and Republican challenger Bert Mizusawa at 29.5%. A June 2026 poll conducted by The Public Sentiment Institute further reported Warner leading Mizusawa 50.3% to 32.8% among likely voters [1][2][3][4].
Forecasts and prediction markets strongly favor Mark Warner for the upcoming 2026 election. As of September 2026, Decision Desk HQ (DDHQ) projects Mark Warner as safe to win the race, assigning him a 96% win probability and an 18-point projected margin. Prediction markets, as of September 9, 2026, show implied probabilities for Mark Warner to win ranging from 95% to 98% [2][3][4][5][6][7].
Sources (10)
  1. 12026 Virginia Elections, Odds & Candidates | Prediction Edgepredictionedge.com
  2. 22026 Virginia US Senate Forecast | DDHQvotes.decisiondeskhq.com
  3. 32026 Virginia US Senate Forecast | DDHQnewsnation-votes.decisiondeskhq.com
  4. 42026 Virginia US Senate Forecast | DDHQintegration-votes.decisiondeskhq.com
  5. 5Why Mark Warner Will Win: Virginia Senate Odds 2026 | OddsShopperoddsshopper.com
  6. 6Virginia US Senate Winner — Compare Odds on 4 Platforms | CoinRithmcoinrithm.com
  7. 72026 Senate Races: All 35 Seats, Market by Marketpredictionmarketspicks.com
  8. 8Silver Bulletin pollster ratings, January 2026 updatenatesilver.net
  9. 9Suffolk University Pollballotpedia.org
  10. 10List of polling firms - Ballotpediaballotpedia.org

9. What potential catalysts or campaign shifts could allow Bert Mizusawa to overcome Mark Warner's polling and fundraising advantages before November 2026?

Warner Polling Lead17.5 percentage points (June 2026) [1]
Warner Funds RaisedOver $25.1 million (as of July 15, 2026) [2][3][1]
Warner Win Probability96% (August 2026 forecast) [1]
Bert Mizusawa faces major hurdles against incumbent Mark Warner in the 2026 U.S. Senate election in Virginia. Republican nominee Mizusawa is significantly behind Democrat Warner, who maintains a substantial lead in early indicators [4][5][6]. As of June 2026, polling data shows Warner leading Mizusawa by 17.5 percentage points, with 50.3% to 32.8% support respectively [1]. Furthermore, Warner holds a considerable financial advantage, having raised over $25.1 million by July 15, 2026, compared to Mizusawa's approximately $376,000 during the same period [2][3][1].
Forecasts strongly indicate a high probability of Warner's victory given the incumbent's strong position. Decision Desk HQ projects a 96% win probability for Warner as of August 2026, classifying the seat as Safe Democratic with a D+18 projected margin [1]. Prediction markets also align with this outlook, pricing Warner's victory at approximately 95% [5][6]. For Mizusawa to overcome such a substantial deficit, highly improbable catalysts would be necessary, such as a significant shift in the Virginia electorate towards Republican trends, lower-than-anticipated Democratic turnout in an off-year-style cycle, or unforeseen campaign crises impacting Warner [5][7].
Sources (7)
  1. 12026 Virginia US Senate Forecastvotes.decisiondeskhq.com
  2. 2WARNER, MARK ROBERT - Candidate overview | FECfec.gov
  3. 3MIZUSAWA, BERT K - Candidate overview | FECfec.gov
  4. 42026 United States Senate election in Virginia - Wikipediaen.wikipedia.org
  5. 5Why Bert Mizusawa (R) Will Win: Virginia Senate 2026 | OddsShopperoddsshopper.com
  6. 6Why Mark Warner Will Win: Virginia Senate Odds 2026 | OddsShopperoddsshopper.com
  7. 7Meet Bert Mizusawa, the Republican hoping to unseat Senator Mark...wvtf.org

10. What Could Change the Odds

Key Catalysts

The 2026 United States Senate election in Virginia is scheduled for November 3, 2026 [1][2][3]. The major candidates are the Democratic incumbent Mark Warner and Republican nominee Bert Mizusawa [1][2][4][5]. As of September 9, 2026, the election has not yet occurred [3]. Prediction markets and electoral forecasts heavily favor incumbent Mark Warner, with win probabilities often exceeding 95% [3][6][7][8]. Decision Desk HQ's forecast, as of August 28, 2026, assigns Mark Warner a 96% probability of winning with a projected D+18 margin [3].
Key catalysts that could alter prediction market sentiment include quarterly FEC campaign finance filings, sustained polling leads, and historical margin-of-victory trends in Virginia [7]. The general election will be held on November 3, 2026, with the successful candidate's term beginning on January 3, 2027 [9][10].

Key Dates & Catalysts

  • Expiration: November 03, 2027
  • Closes: November 03, 2027
Sources (10)
  1. 12026 United States Senate election in Virginia - Wikipediaen.wikipedia.org
  2. 2Virginia Senate Primary Election 2026 Live Results: Warner, Mizusawa, Farington and Morenbcnews.com
  3. 32026 Virginia US Senate Forecastvotes.decisiondeskhq.com
  4. 4Mark Moran (Virginia) - Ballotpediaballotpedia.org
  5. 5Virginia elections, 2026 - Ballotpediaballotpedia.org
  6. 6Virginia Senate Election Winner Predictions & Odds 2026 | Polymarketpolymarket.com
  7. 7Why Mark Warner Will Win: Virginia Senate Odds 2026 | OddsShopperoddsshopper.com
  8. 82026 Virginia Senate Election: Polls & Odds | Prediction Edgepredictionedge.com
  9. 9United States Senate elections, 2026 - Ballotpediaballotpedia.org
  10. 10The 2026 Midterms: Key Dates and Events • Bipartisan Policy Centerbipartisanpolicy.org