Which party will gain most seats in Russian Parliamentary Election?

Platform comparison

Market context

Russia is due to hold State Duma elections in September 2026, with 450 seats at stake in the lower house. In this market, a **YES** share pays out if the named party gains the most seats versus its position before the election; a **NO** share wins if some other party gains more seats, and if the result is not clear by the settlement deadline the market can resolve to **Other**. [4]

For context, United Russia starts from a very large base after winning 324 seats in 2021, so the key question is not whether it remains dominant, but whether any rival can make a larger net seat gain. Recent polling and projection work still point to United Russia as the largest bloc, with WCIOM-based seat estimates giving it 201 projected seats in one snapshot and other models putting it nearer the low 300s, while the opposition parties remain fragmented and much smaller. That makes the current 69% crowd price a read on continuity: the market is leaning towards the incumbent party, but it is also pricing in the possibility of a relative gain by another party from a low starting point. [1][3][5]

The main catalysts to watch are the formal election timetable, candidate registration rules, and any shift in the seat projections as campaigning develops. Russia’s electoral commission will confirm the exact schedule and any procedural changes closer to the vote, while polling updates can quickly alter expectations in a contest where the difference between “most seats” and “largest gain” is crucial. Recent commentary has also highlighted the role of new territorial districts and the occupied Ukrainian territories in shaping how seats are allocated, which could matter if boundary or turnout assumptions change before September. [10][8][1]

Sources: 1 · 2 · 3 · 4 · 5

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