France is holding the first round of an early parliamentary election on Sunday that could bring the country’s first far-right government since Nazi occupation during World War II.

The second round is on July 7, and the outcome of the vote remains highly uncertain.

Three major political blocs are competing: The far-right National Rally, President Emmanuel Macron’s centrist alliance, and the New Popular Front coalition that includes center-left, greens and hard-left forces. The French system is complex and not proportionate to nationwide support for a party.