The country’s electoral commission ruled on Sunday that Calin Georgescu, an outspoken critic of Ukraine and NATO, could not compete in the do-over election.

Last week, Romanian authorities expelled two Russian diplomats, military attaché Victor Makovskiy and his deputy Evgeny Ignatiev, who were accused of foreign election interference tied to Mr. Georgescu’s campaign.

In Romania, the controversial and far-right leader of the party, Călin Georgescu, has not been registered to participate in the presidential election in May. This could intensify political upheaval in the country,