Which party will gain most seats in Russian Parliamentary Election?

Platform comparison

Market context

Legislative elections are scheduled to take place in Russia on 18–20 September 2026, with 450 seats in the State Duma of the 9th convocation at stake. On Polymarket today, this contract trades at 56% YES, implying a crowd belief that United Russia will gain the most seats compared to its pre-election tally. The market resolves to the party with the greatest seat increase, defaulting to "Other" if results remain unknown by 30 September 2027, or to the higher-vote party in a tie.

Historically, United Russia has dominated Russian elections, securing 324 seats and 49.8% of the vote in 2021, while current polls show the party (YeR) leading with 46.1% and a projected 66.4% of seats for incumbent governing parties[1][3]. Comparable cases from 2016 and 2021 show ruling parties consistently gaining seats despite modest vote fluctuations, framing the 56% probability as a conservative assessment of entrenched dominance rather than a speculative bet on change.

Traders should monitor announcements on single-mandate constituency boundary changes, which authorities are altering ahead of the 2026 vote to manage outcomes[7], and watch for shifts in New People’s standing, the only party showing potential growth since 2021[4]. Key dependencies include the official election schedule release and polling updates from VCIOM or FOM, with recent data highlighting divergent views on New People’s second-place status versus trailing performance[4]. The settlement window ends 20 September 2026, so on-chain mechanics on Polygon using USDC will reflect real-time sentiment as these catalysts unfold.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Which party will gain most seats in Russian Parliamentary Election? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

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.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Kalshi UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.