A referendum that constitutionally enshrines a national objective to join the E.U. passed by a thin margin. The incumbent pro-E.U. president won the most votes in a concurrent election, but faces a runoff.

Electoral data shows that Moldovans have voted by a razor-thin majority in favor of securing the country’s path toward European Union membership.

Before the vote, Moldovan authorities said Ilan Shor, a fugitive tycoon who lives in Russia, had made concerted attempts to meddle in the referendum and election. The authorities said they had taken down online resources that hosted disinformation and had uncovered a programme in Russia to train Moldovans to take part in mass unrest.