Russia Parliamentary Election Winner

Platform comparison

Market context

Russia will hold its first State Duma election since the invasion of Ukraine on 18–20 September 2026, with 450 deputies elected to the lower house of parliament [3][4]. The ruling United Russia party is widely expected to retain its constitutional majority, a position it has held since 2003, while the main contest centres on which party secures the second-most seats [3][8].

Historical precedent strongly supports the 95% YES implied probability for United Russia, as the party won 326 of 450 seats in 2021 and has maintained an absolute majority in every election since 2003 [1]. Recent polling from June 2026 reinforces this dominance, with United Russia securing between 42.7% and 52.1% of voter support across major surveys, far ahead of any challenger [5]. The only comparable divergence occurred in 2021 when United Russia lost 19 mandates but still retained a clear majority, suggesting that even a significant drop in support would not threaten its top position [4].

Traders should monitor the final list of eligible parties announced by the Central Election Commission, which currently includes 17 contenders, and watch for shifts in second-place polling between New People and the Communist Party [6][8]. The voting will span three days, a norm established since the pandemic, with results expected to be definitive before the market’s September 2027 settlement deadline [6]. Any meaningful divergence between Kalshi’s sportsbook lines and Polymarket’s 95% probability would likely reflect speculation on New People’s rising 12% support overtaking the Communists, though this does not alter United Russia’s victory outlook [8].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Russia Parliamentary Election Winner 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

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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 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 PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.