The pro-Kremlin nationalist party Rodina accused Yabloko of receiving undeclared campaign support, notably from Western sources – an allegation Yabloko denied.

Russia‘s Supreme Court has barred the only officially registered party opposing Moscow’s war in Ukraine from running in next month’s parliamentary elections.

The court upheld a suit on Monday brought by the small pro-Kremlin nationalist party Rodina to annul the registration of Yabloko, stripping voters of the chance to express their discontent with the four-and-a-half-year conflict at the ballot box.

Last month, the Central Election Commission had initially allowed Yabloko on the ballot along with 10 other parties.

“The claims seeking to annul the registration of the federal list of candidates for the State Duma of the ninth convocation, nominated by the Yabloko political party, were granted,” Judge Vyacheslav Kirillov said.

Rodina alleged that Yabloko had received undeclared campaign support, including from Western sources, among other accusations.

During a day-long hearing, Yabloko leader Nikolai Rybakov said there was no evidence to support the allegations and described the case as an unconstitutional attack on freedom of thought by political opponents seeking to clear the field of rivals.

About 100 supporters, mostly young people, gathered outside the courthouse as police stood by, chanting “Shame! Shame!” after the ruling was delivered. Some carried apples to display their affiliation with Yabloko, which means “apple” in Russian.

Addressing them after the hearing, Rybakov said the party would appeal the decision.

“We have a long way ahead, and we have a big and important task: to stop deaths and bring the peace back,” he said. “Everything we do should be dedicated to that.”

With most of President Vladimir Putin’s opponents jailed, exiled or dead, Yabloko is the only liberal party still operating in Russia.

The party has received the backing of several exiled opposition figures, including Yulia Navalnaya, the widow of the late opposition leader Alexey Navalny. Both are listed as “extremists” in Russia.

A poll conducted earlier this year showed Yabloko at just three percent support – short of the five-percent threshold needed to enter Russia’s lower house.

With the Kremlin tightening its control over elections, Yabloko has failed to win seats in the State Duma since 2003.

Since then, every parliamentary vote has been won by the ruling United Russia party, which backs Putin.

Efforts to end the Ukraine war through diplomacy have so far failed, with Putin pushing hardline territorial demands to end the fighting and ruling out talks with Ukraine’s President Volodymyr Zelenskyy.

Independent polls show most Russians favour peace negotiations with Kyiv.