MOSCOW/TOMSK—The ruling United Russia party secured landslide wins in weekend regional elections while losing its majority in a Siberian city council contested by supporters of Kremlin critic Alexei Navalny, partial results show.
Supporters of the opposition politician, who is being treated in Berlin after a suspected poisoning by a nerve agent, made rare gains in the Siberian city of Tomsk and won seats in the city of Novosibirsk, along with other opposition groups.
