France's far-right National Rally will force the collapse of Prime Minister Michel Barnier's government unless in a "last minute miracle" he yields to their demands on the budget, its president Jordan Bardella said.

Far-right leader Marine Le Pen, who holds outsize leverage in France’s split parliament, gave Prime Minister Michel Barnier until Monday to adhere to her budget red lines before she decides whether to topple the government.

France could see a political earthquake in the coming days as the far right National Rally gave the government a deadline of Monday to agree fresh concessions over the budget.

The far-right National Rally indicated in the strongest language yet that it could topple the French government as soon as this week, hours after Finance Minister Antoine Armand said his administration wouldn’t be blackmailed.