French President Emmanuel Macron is warning of civil war if the extreme right or the left wins this month's early elections.
Macron says both groups have pursued divisive policies that fuel tensions between communities.
According to him, the extreme right, seeing people according to religion or origin, "pushes people towards civil war".
While the extreme left, led by Jean-Luc Mélenchon, encourages a form of division for electoral purposes "which also promotes civil war because it reduces people to their religious or ethnic grouping".
Macron referred to accusations that the left-wing coalition is trying to woo Muslim voters through a critical approach to Israel's war in Gaza.
The French president called snap elections earlier this month after his coalition was defeated by far-right Marine Le Pen in European elections. The French are now preparing to vote in the parliamentary elections, which are expected to give the majority to Le Pen's party.
Polls say she will get 35 percent in the first round, while the left-wing alliance follows with 27 percent and Macron's centrists with 19 percent.
In recent days, even Macron's allies have warned of the dangers France faces if voters turn to the far right or far left, particularly the risk of economic turmoil. Macron himself went a step further by warning what he called "extremists" who increase "conflict and civil war".
"When you are tired and everyday life is difficult, you can be tempted to vote for extremes that have faster solutions. But it will never be a solution if you reject others," he said.