Where to trade, what markets are open, race-by-race Cook ratings, and strategies for navigating the most active political trading season since 2024.
Platforms Active
4
Senate Races
35
Key Toss-Ups
4
Read Time
10 min
The key takeaway from this page
Last updated: April 2026
Where to trade, what markets are open, race-by-race Cook ratings, and strategies for navigating the most active political trading season since 2024.
Verified March 14, 2026. Senate composition, race ratings, and platform market availability confirmed via senate.gov, Cook Political Report (Jan 12, 2026), Kalshi, and Polymarket. Market odds change constantly — check each platform for live prices.
Senate & House control in 2026
U.S. Senate
53 R – 47 D
Current composition, 119th Congress. Includes 2 independents caucusing with Democrats.
Seats up in 2026: 35 (33 Class II + 2 special elections in FL & OH)
D gain needed for majority: Net +4 seats
R seats defending: 22 of the 35
U.S. House
Republican Majority
Republicans hold the House in the 119th Congress. 218 seats needed for majority.
All 435 seats up for election Nov 3, 2026
Cook Toss-Ups: ~18 House seats (as of Jan 2026)
Historical pattern: President's party typically loses House seats in midterms
Why This Cycle Matters for Prediction Markets
The 2026 midterms are the first full congressional election cycle with broad CFTC-regulated prediction market access. Kalshi and ForecastEx offer political election contracts as CFTC-regulated DCMs. Polymarket's CFTC-regulated US entity (QCX LLC) is live for sports markets only — midterm political contracts are on Polymarket's global (offshore) platform. The combination of competitive Senate races and a historically favorable House map for Democrats has driven record early trading volume.
Platform comparison for election trading
Two CFTC-regulated platforms (Kalshi, ForecastEx) offer active 2026 midterm election markets. Polymarket's global platform also hosts midterm markets but its CFTC-regulated US entity (QCX LLC) is sports-only. Each platform has different liquidity, fee structure, and settlement rules.
Kalshi
Deepest LiquidityActive Markets
Key Details
Kalshi has the deepest liquidity for US congressional markets and the widest selection of individual race contracts. Politics markets carry zero taker and maker fees — you trade on price movement, not fee drag.
Trade on KalshiPolymarket
Widest Market SelectionGlobal Platform OnlyActive Markets
Key Details
Polymarket's global platform hosts the widest range of midterm markets by count, including the popular Balance of Power combo contract ($3.5M+ volume as of April 2026). Note: These political markets are on Polymarket's global (offshore) platform, not the CFTC-regulated US entity (QCX LLC), which currently offers sports markets only. US residents should verify their access and legal status before trading political markets on the global platform.
Trade on PolymarketForecastEx (Interactive Brokers)
InstitutionalActive Markets
Key Details
ForecastEx offers 2026 election contracts alongside economic and financial derivatives — ideal for traders who want to combine political and macro positions in one brokerage account.
Trade on ForecastExPredictIt
CFTC No-Action LetterLegacy platform with select political markets under its CFTC no-action letter. Fees are higher (10% profit fee + 5% withdrawal), and position limits apply ($3,500 per contract). Suitable for traders who prefer a familiar interface for small-position political trading.
Side-by-side fee structure
| Platform | Regulation | Election Fee | Settlement |
|---|---|---|---|
| Kalshi | CFTC DCM + DCO | Politics and policy markets: zero taker fees, zero maker fees | AP race calls |
| Polymarket | CFTC DCM (via QCX LLC) | Free / US: 0.75% peak taker fee for sports (probability-based; near-zero for heavy favorites) | AP + Fox + NBC |
| ForecastEx (Interactive Brokers) | CFTC DCM (ForecastEx) | $0 commission; $0.01/contract exchange fee built into price | Official results |
| PredictIt | CFTC No-Action Letter | 10% profit fee + 5% withdrawal | Official results |
All fee data from our verified platform database. Election markets on Kalshi carry zero fees — the only cost is the bid/ask spread.
Toss-up and competitive seats
Ratings from Cook Political Report, January 12, 2026. Source: cookpolitical.com
Georgia
Toss-UpOssoff (D)
Dems' most vulnerable seat. Most competitive pickup opportunity for R.
Maine
Toss-UpCollins (R)
Only sitting R senator from a state that voted Harris in 2024.
Michigan
Toss-UpOpen (D)
Open seat after Peters retirement. Competitive primary for both parties.
North Carolina
Toss-UpOpen (R)
Tillis retired. Primaries settled March 3: Roy Cooper (D) vs. Michael Whatley (R, Trump-endorsed RNC chair). Cooper is undefeated statewide; Democrats' best pickup opportunity.
Alaska
Lean RSullivan (R)
Competitive enough to watch; Sullivan faces a credible challenger.
Ohio (Special)
Lean RHusted (R)
Sherrod Brown (D) is running — announced Aug 2025. Special election for Vance's vacated seat; winner serves through 2028, then must run again. Polls show Brown and Husted effectively tied.
New Hampshire
Lean DOpen (D)
Shaheen retiring. Slight D lean but competitive.
The Arithmetic
Democrats need to flip four net seats to reach 51. That means winning both Toss-Ups on the Democratic side (Georgia and Michigan), flipping both of Cook's most vulnerable Republican seats (Maine and North Carolina), and then finding at least one more pickup from the next tier such as Ohio or Alaska while holding the rest of their own map. Cook's overall framing was that Republicans still had the structural edge. Markets as of March 14, 2026 give Democrats a 51% chance of Senate control (Kalshi) and 51% (Polymarket).
Current odds across platforms
Prices from Kalshi and Polymarket public markets as of March 14, 2026. These change constantly — check each platform for current odds.
| Outcome | Kalshi | Polymarket |
|---|---|---|
| Democrats win House | 84¢ | 85¢ |
| Democrats win Senate | 51¢ | 51¢ |
| Democrats sweep both chambers | 50¢ | 49¢ |
| D House, R Senate (split) | 37¢ | 36¢ |
| Republicans sweep both chambers | 14¢ | 17¢ |
Prices = implied probability. 84¢ means an 84% market-implied chance. Check each platform live before trading.
Binary contracts explained
Binary contracts: YES or NO
Each prediction market contract is a binary bet. You buy YES or NO on a specific question — for example, “Will Democrats control the House after the 2026 elections?” If the outcome happens, YES pays $1.00. If it doesn't, YES pays $0 (and NO pays $1.00). The price at any moment reflects the market's implied probability.
Settlement triggers
Election markets settle when the designated resolution source calls the race. Kalshi uses the Associated Press. Polymarket's Balance of Power market requires AP, Fox News, and NBC to reach consensus. Contracts do not wait for official state certification — the AP call is typically sufficient. ForecastEx uses official results.
Exit before November
You don't have to hold through election night. Prediction market contracts trade like securities — you can sell your position at any time at the current market price. If you buy Democrats win House at 84¢ and the market moves to 90¢ on good news, you can exit and lock in the gain without waiting for settlement.
Individual races vs. chamber control
Chamber-level markets (House control, Senate control) reflect the aggregate result. Individual race markets let you trade specific seats — a competitive Senate race in Georgia, a redistricted House district. Individual markets tend to have less liquidity and wider bid/ask spreads than chamber-level markets.
“More and more prospective participants are trying to enter this market and there doesn't seem to be any barrier. The applications are practically limitless, in the sense that we're full of questions about the future all the time. I'm incredibly bullish on this space, especially with elections coming this year.”
— Thomas Peterffy, Founder & Chairman of Interactive Brokers
Reuters, January 14, 2026 (by Anirban Sen)
Five approaches for election traders
1. Fade the extremes early
When chamber control markets open very wide (one side at 80¢+), the market may be overreacting to a single data point. Early-cycle prices are set with thin liquidity. The summer lull often provides better entry points before October volatility compresses spreads.
2. Arbitrage Senate vs. House vs. Balance of Power
The Balance of Power combo contract (both chambers) should price roughly equal to Senate × House probabilities. When the combo is mispriced vs. the individual chamber markets, there's a mathematical arbitrage. Watch for these especially on Polymarket where both the individual and combo markets trade simultaneously.
3. Individual race alpha on the Senate map
The four Cook Toss-Up races (GA, ME, MI, NC) are the key levers. When local polling drops or a strong candidate enters, individual race markets often react faster than the chamber-level market. Trading individual races gives you more targeted exposure than chamber control.
4. Cross-platform price discovery
Kalshi and Polymarket often show 1–3¢ spreads on the same outcome. When the spread widens to 5¢+, you can buy YES on one platform and NO on the other for a near-riskless profit. Account for fees and deposit/withdrawal friction when calculating net edge.
5. Timing: watch primary results
Midterm primaries conclude June–August 2026. A weak nominee in a competitive state (e.g., an extreme candidate in NC or ME) causes immediate price moves. General election markets often open or significantly reprice after primaries settle.
Regulation, state law, and restrictions
CFTC-regulated platforms are federally legal, with state-level exceptions
Kalshi and ForecastEx are CFTC-regulated Designated Contract Markets offering election contracts to US residents. A 2024 federal court ruling confirmed Kalshi's right to list election contracts, though 20+ federal and state actions pending as of April 2026. Mixed outcomes: NJ 3rd Circuit ruled for Kalshi (Apr 6); CFTC won Federal TRO in AZ (Apr 10, PR 9211-26); OH OCCC $5M fine notice (Apr 14); KY HB 904 enacted via veto override (Apr 14); WA AG civil suit pending (Mar 27). states have filed challenges.Polymarket's US entity (QCX LLC) is also a CFTC-regulated DCM but currently lists sports markets only — political markets are on Polymarket's global platform.
State litigation ongoing
Several states (including NV, MD, MA, MI, CT, TN, NY, UT, WA) have filed lawsuits or enforcement actions. As of April 2026: NJ is now fully live (3rd Circuit ruling Apr 6); KY legalized via HB 904 veto override (Apr 14); AZ criminal case paused by CFTC federal TRO (Apr 10); OH OCCC issued a $5M fine (Apr 14). Platforms continue operating while cases proceed. Check each platform's current state availability before funding your account.
Track state litigation status →Torres legislation
Proposed legislation from Rep. Ritchie Torres would restrict federal officials and government employees from trading prediction markets. Status as of April 2026: introduced/committee review. This would not affect typical retail traders but could affect market liquidity if institutional participation from government-connected parties is restricted.
5 common questions answered
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