Which party will gain most seats in Russian Parliamentary Election?

Platform comparison

Market context

Legislative elections to select 450 seats in Russia’s State Duma are scheduled for 18–20 September 2026, marking the first parliamentary vote since the war against Ukraine began. On Polymarket, this contract currently prices at a 2% implied probability for any party other than United Russia to gain the most seats, reflecting the ruling party’s entrenched dominance with 324 seats and 49.8% of the vote in 2021[1]. Historical precedent and current polling suggest that United Russia, alongside LDPR, will retain a solid majority of 66.4% of seats, making a shift in the party gaining the most seats highly improbable under existing conditions[3].

Traders should monitor announcements regarding constituency boundary changes, as Russian authorities are actively altering single-mandate zones ahead of the 2026 vote, a tactic previously used to manage electoral outcomes[7]. Polling volatility between New People and LDPR remains a key catalyst; while VCIOM ranks New People second at 13.4%, FOM data shows them trailing at 6%, indicating significant uncertainty in the second-place contest[4]. The only party currently showing potential for growth compared to 2021 is New People, which could be a critical variable if their support consolidates before the election[4]. Watch for official campaign schedules and any shifts in voter intention trends from PolitPro, where YeR leads at 46.1%[3].

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 PolyGram, which mirrors the Polymarket order book directly.

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

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.

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 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.