Which party will gain most seats in Russian Parliamentary Election?

With no fresh news provided, the best guide is the underlying structure of Russian parliamentary elections rather than day-to-day campaign dynamics. United Russia is the incumbent regime party, it dominates the current State Duma, and the election environment is heavily shaped by administrative control, candidate filtering, media imbalance, and strategic seat distribution. In that setting, the party most likely to be favored in any managed adjustment to the legislature is still United Russia, because preserving its dominance is a core objective of the political system.

The key nuance is that this market is not asking which party wins the most seats overall, but which party gains the most seats relative to the previous Duma. That makes the ceiling effect important. United Russia already starts from a very large base, so its absolute gain is not automatically guaranteed; if the authorities want to give a modest boost to a smaller systemic party such as New People or LDPR, that party could post a larger increase from a lower starting point. Even so, in Russian practice the main beneficiary of favorable seat engineering is usually the ruling party itself, especially if the leadership wants to demonstrate continuity and strength rather than broaden the success of a partner party.

The market price implies a strong but not overwhelming consensus in favor of United Russia, and that feels directionally right. A Yes outcome is most likely if the authorities preserve the familiar pattern of controlled competition and either restore some seats United Russia previously lost or marginally expand its bloc through district and list management. The main path to No is if the Kremlin deliberately reallocates some gains toward a loyal secondary party, or if United Russia underperforms enough that another party ends up with a larger net increase despite still remaining politically subordinate. That is plausible, but it is less consistent with the regime's usual incentive to keep United Russia unmistakably first among all parties.