2026 Midterms Tracker
Real-time prediction market odds for the 2026 US midterms — closest Senate and House races plus chamber control, sourced from Kalshi and Polymarket, updated every 15 minutes.
POLITICS
Live Senate, House & balance-of-power odds — updated all cycle
What is this?
The 2026 midterms decide control of both chambers. This tracker rotates through the most competitive Senate races, the most competitive House races, and the balance-of-power contracts that price which party controls each chamber after January 2027 — all sourced live from Kalshi and Polymarket.
Control markets move on every close race. When a single Senate seat re-prices, the chamber-control contract re-prices with it — and the two don't always stay in sync. That lag is where a sharp trader finds a position.
Real-World Example
→ The Control Lag
A toss-up Senate seat drifts from 50¢ to 58¢ for one party after a recruiting win. The seat market moves fast — but the chamber-control contract is still pricing the old map at 44¢.
You take a position on control before the market finishes connecting the dots. As more seats confirm the trend, the control contract catches up and you're already in.
✅Action: Watch the closest races and the control contract together — when they disagree, the market hasn't finished pricing the map.
Bottom line: Single-seat moves lead chamber-control prices. The lag between them is the edge.
Full guide →Quick Answer
this page shows live 2026 midterm probabilities from Kalshi and Polymarket — the closest Senate and House races plus the market-implied odds each party controls its chamber after January 2027. Each contract pays $1 if the named party wins control, so the price is the money-weighted probability.
The 2026 midterms decide control of the Senate and House. This tracker surfaces the most competitive races on each side and the balance-of-power contracts that price which party controls each chamber after January 2027 — sourced live from Kalshi and Polymarket. Each contract is a binary: it pays $1 if it resolves yes, $0 if not, so the price is the market's consensus probability, updated continuously.
Source: Kalshi + Polymarket · Updated 4:00 PM EDT
Will the Houston Texans draft Brendan Sorsby in the 2026 NFL Supplemental Draft?
7oracles: How Our NFL Player Projections Actually Perform vs. the Market — and Why We Only Publish Four Stat T…
Will the rate of CPI inflation be above 4.8% for the year ending in August 2026?
cnbc: Here’s the inflation breakdown for June 2026 — in one chart
Will the S&P 500 be between 8000 and 8199.99 on Dec 31, 2026 at 4pm EST?
bbc: The SpaceX IPO made history. One month on has it lost momentum?
Will the Democratic Party win the FL-24 House seat?
washpost: Left-wing challengers are beating House Democrats. These incumbents could be next. - The Washington …
News the market hasn't priced yet · Oracle v2 · updates every 15 min
Related Tools
Why use prediction markets for 2026 midterm odds?
Polls measure opinion. Prediction markets measure conviction. On Kalshi, a trader who thinks a party flips a Senate seat puts real money behind that view — and loses it if they are wrong. That skin in the game forces price discovery that polls can't replicate, race by race.
How to read the closest races vs. chamber control
There are two layers to watch:
- Closest races — individual Senate and House contests sorted by how close they are to a coin flip. These are where single events (recruiting, scandals, retirements) move prices fastest.
- Balance of power— chamber-control contracts that aggregate every seat into one probability. When the seat markets and the control contract disagree, the market hasn't finished repricing the map — that lag is the opportunity.
Embed this 2026 midterms tracker
Click the Embed button above. The hero rotates through the closest Senate races, closest House races, and balance-of-power contracts — perfect for politics blogs and newsletter headers. One iframe, no maintenance, auto-updates from live market data.
Get The 7 Oracles' daily edge — subscribe free
No spam. Unsubscribe anytime.