Which party will gain most seats in Russian Parliamentary Election?

Platform comparison

Market context

Russia will hold its first State Duma elections since the start of the war against Ukraine on 18–20 September 2026, with 450 seats at stake in the lower house of the Federal Assembly[1]. In this market, a YES share means you believe United Russia will gain the most seats compared to its pre-election tally, while a NO share implies another party will outperform them; the crowd currently assigns a 56% probability to United Russia winning this outcome[1]. This election is a managed procedure that will complete the regime’s political transformation rather than drive significant change, though the electoral period heightens the system’s sensitivity to public dissatisfaction[2].

Historically, United Russia has maintained a constitutional majority, securing 324 seats in 2021 with nearly 50% of the vote, and recent polls suggest it will again lead with 46.1% of support[1][3]. Comparable cases show the ruling party consistently dominates due to parallel voting rules and a 5% threshold that filters smaller parties, with the coalition of United Russia and LDPR holding 66.4% of seats in current trends[3]. Traders should watch the redistricting of single-mandate constituencies, approved in April 2025, which strategically includes occupied Ukrainian territories to reduce electoral risks for the ruling party[2][7].

Key catalysts include the expansion of remote electronic voting, expected in half of Russia’s regions, and the three-day voting window that may influence turnout patterns[2]. The Central Election Commission’s new constituency map, particularly the eight-constituency scheme in Saint Petersburg, is a critical dependency for seat allocation[2]. While New People shows potential for growth compared to 2021, its faction supports virtually all bills with 96.3% approval, limiting its ability to gain seats independently[5]. The market resolves to “Other” if results are not definitive by 30 September 2027, or in favour of the party with more valid votes if a tie occurs for most seats gained[1].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Prediction Market UK, which mirrors the Polymarket order book directly.

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?

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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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Prediction Market 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.