2026 Midterms Odds: How to Bet on the Senate, House, and More

2026 Midterms Odds: How to Bet on the Senate, House, and More

Unlock $50 in welcome bonuses to trade on the 2026 Midterms today using promo code CHECK on Polymarket ($25 trading bonus) and code ODDSCHECKER on Kalshi ($25 bonus credit).

While commercial sportsbooks cannot legally take election wagers under state gaming laws, you can trade election event contracts legally on CFTC-regulated prediction exchanges like Kalshi and Polymarket US.

Instead of betting against a bookmaker, you trade binary "Yes" and "No" shares directly with other market participants on which party will win the U.S. House, the U.S. Senate, and key state races.

Here is how to claim your bonuses, review live odds, place your trades, and navigate the 2026 midterm markets.

Midterms Welcome Bonuses: How to Claim Your Trading Credits

How to Claim the Polymarket $25 Promo Code for the 2026 Midterms

Redeeming your welcome bonus on the official US platform takes just five simple steps:

Step 1: CLICK HERE or download the official Polymarket U.S. app

Step 2: Tap “I have a referral code” and enter CHECK

Step 3: Complete signup using your Apple or Google login

Step 4: Add a payment method and deposit at least $10

Step 5: Make your first qualifying trade - your $25 trading bonus is issued automatically (Bonus funds are non‑withdrawable, but profits from trades are yours.)

How to Claim Your Kalshi $25 Promo Code for the 2026 Midterms

Redeeming your welcome offer and unlocking your credit takes just six simple steps:

Step 1: CLICK HERE or Visit Kalshi or download the app and start the sign-up process.

Step 2: Provide your date of birth and enter the Kalshi promo code: ODDSCHECKER.

Step 3: Enter a valid phone number and input the verification code sent to your phone.

Step 4: Accept the Kalshi Terms & Conditions and confirm your personal information, including your Social Security Number (SSN) (required for CFTC-regulated exchanges).

Step 5: Deposit funds using an approved payment method (ACH, debit card, USDC, or wire).

Step 6: Complete $25 in total trades across any available markets (sports, politics, finance, entertainment) to trigger your bonus. Note: multiple smaller trades count toward the $25 total!

2026 Midterms Odds Comparison: Kalshi vs. Polymarket

On both platforms, political event contracts trade between 1¢ and 99¢ (or 1% to 99%). Winning contracts settle at $1.00 (100¢), while losing contracts settle at $0.00.

Here is how odds and pricing compare across Kalshi and Polymarket:

Key Market Takeaways:

• The House of Representatives: Both exchanges price Democrats as heavy favorites to win the chamber at 91%–92% (90.8¢–92¢), compared to 8%–9% (9.4¢–8¢) for Republicans.
• The Senate: The Senate remains competitive, with Democrats priced at 65%–66% to win control versus 34%–37% for Republicans.
• Balance of Power: A Democratic sweep of both chambers is the favored unified outcome at 64%–65%, while a divided Congress (Democratic House and Republican Senate) trades at 28%.

How to Bet on the 2026 Midterms with Promo Credits

Trading on prediction exchanges gives you full control to build positions or take profits before Election Day:

1. Allocate Bonus Credits Strategically

Use your $25 Polymarket bonus and $25 Kalshi credit to target your preferred risk profile:

• Conservative Return (House Majority): Buying 100 shares of Democratic House control at 91¢ costs $91 and pays $100 if they win (~10% return).
• Growth / High-Yield (Senate & Sweeps): Buying shares on a Democratic Sweep at 64¢ or Republican Senate retention at 37¢ provides higher payout multipliers if the outcome lands your way.

2. Explore State and District Races

Beyond national majorities, both platforms feature contracts for:

• Battleground U.S. Senate Contests: Trade competitive statewide races in states like Pennsylvania, Georgia, Arizona, Wisconsin, and Ohio.
• Gubernatorial Elections: Back individual candidates in high-profile governor races across the country.
• Seat Total Brackets: Trade over/under ranges on the exact number of seats each party secures.

3. Manage Positions in Real Time

Unlike sportsbooks where bets stay locked until the end of a game, exchange order books are open 24/7. If polling shifts or race dynamics improve and a contract bought at 65¢ rises to 82¢, you can sell your shares back to the market immediately to lock in profits.

What Are the 2026 Midterm Elections?

The 2026 Midterm elections take place on Tuesday, November 3, 2026. Held at the midpoint of a presidential term, midterms determine legislative control in Washington:

• Offices Contested: All 435 seats in the U.S. House of Representatives and 35 U.S. Senate seats are on the ballot, alongside 36 governorships and state legislative chambers.
• Historical Pattern: The party holding the presidency historically faces headwinds during midterms. The 2026 races serve as the primary national referendum on the sitting administration's agenda, economic conditions, and federal policies.
• Timeline: While race projections begin on election night, official state certifications occur over the following weeks, leading up to the 120th Congress convening in January 2027.

2026 Midterms Prediction Market FAQs

Can I bet on the 2026 Midterms on DraftKings or FanDuel?

No. State commercial sports gaming regulations prohibit sportsbooks from listing political markets. Prediction exchanges like Kalshi and Polymarket US operate under federal CFTC regulatory oversight, where event contract trading is legal.

What is the minimum deposit to start trading?

Polymarket requires a minimum first deposit of $10. Kalshi allows deposits via ACH, debit card, or wire, requiring $25 in total trades to unlock your bonus.

What happens if a race triggers a recount or runoff?

Contracts remain open on the exchange. Trading continues until state election officials officially certify the winner under the platform's published settlement rules.