Moldovans are going to the polls in the second round run-off of a presidential election seen as a choice between a European future or a return to Russian influence.
Pro-European President Maia Sandu faces Alexandr Stoianoglo, a man she fired as chief prosecutor, who has promised to balance foreign policy between the West and Russia and has the backing of the pro-Russian Party of Socialists.
Sandu and Moldova's authorities have warned that a fugitive oligarch now based in Russia is trying to buy the election for Moscow.
The Kremlin has denied interfering in the vote, much as it did during last weekend's disputed elections in Georgia, whose president described the vote as a "Russian special operation".