Which party will gain most seats in Russian Parliamentary Election?

Platform comparison

Market context

Russia will hold its legislative election for the State Duma on 18–20 September 2026, with 450 seats at stake in the lower house of the Federal Assembly[1]. This is the first State Duma election since the war against Ukraine began, and United Russia currently dominates with 324 seats following its 2021 victory[1][2]. The market asks which party will gain the most seats compared to before the election, with a current crowd-implied probability of just 2% for the “Yes” outcome, suggesting traders see little chance of any challenger overtaking United Russia’s seat growth.

Historically, Russian parliamentary elections have reinforced the ruling party’s dominance, with United Russia securing 49.8% of the vote and 324 seats in 2021[1]. Poll trends show United Russia (YeR) leading with 46.1%, followed by LDPR at 13.6% and KPRF at 13.1%, with no party showing significant potential to outpace United Russia in seat gains[3]. The only party with modest growth potential is New People, which polls around 10% and is seen as the only one possibly gaining compared to 2021, but still far behind United Russia[4].

Traders should monitor official campaign announcements, constituency boundary changes, and polling updates from FOM and WCIOM, which have recently diverged in their readings of New People’s support[3][4]. The Kremlin is actively adjusting single-mandate constituency boundaries ahead of the election, a move that could influence seat distribution[8]. With United Russia’s coalition of YeR and LDPR holding 66.4% of seats in current polls, the structural advantage remains overwhelming, making any challenger’s seat-gain victory highly improbable[3].

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Methodology

This page reviews Which party will gain most seats in Russian Parliamentary Election? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Best Prediction Markets, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.