Which party will gain most seats in Russian Parliamentary Election?

Platform comparison

Market context

Russia’s next State Duma election is scheduled for 18–20 September 2026, with 450 seats at stake, and the market resolves on which party gains the most seats versus its current position. That framing matters because United Russia starts from an unusually large base, so the relevant comparison is not just who wins the chamber, but who posts the largest net seat increase from the existing parliament.[4][6][11]

That is why the crowd’s 70% implied probability for the leading party looks broadly consistent with public projections, but not perfectly uniform across platforms. PolitPro’s March projection shows United Russia on 201 seats, ahead of LDPR on 73, New People on 71, KPRF on 66 and SRPZP on 39, while another projection tool puts United Russia at 319 seats, implying a small net decline from the current 314–315-seat baseline but still by far the largest bloc.[1][3][4] In cross-platform terms, odds sites that price United Russia around the mid-50s to mid-60s are notably lower than the current 70% market view, suggesting the market is somewhat more confident than some model-based estimates, though still aligned with the broad analyst consensus that the ruling party remains the dominant favourite.[5][7]

The main catalysts are the formal election timetable, candidate registration, and any late changes to district boundaries, turnout assumptions or party participation, because those can shift seat-gain calculations even if the winner is obvious. Recent coverage also points to the Kremlin’s preparation for the vote and the continuing advantage of the ruling party’s structural position, which keeps attention on whether smaller systemic parties can make incremental gains rather than whether United Russia can retain control.[8][11][12]

Sources: 1 · 2 · 3 · 4 · 5

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 Kalshi vs Polymarket, which mirrors the Polymarket order book at 0% fees.

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'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.

Do I need to KYC for this market?

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