Romanian Prime Minister Marcel Ciolacu resigned on Monday, a day after a far-right opposition leader won the first round of the presidential election re-run and his own candidate crashed out of the race.

Marcel Ciolacu announced his resignation on Monday, saying his ruling coalition has lost legitimacy after EU critic George Simion's first-round win, deepening turmoil ahead of the May 18 runoff.

Nearly complete electoral data shows that hard-right nationalist George Simion has secured a decisive win in the first round of Romania’s presidential election redo.