The star president of France’s National Rally will take the helm of government only if the party wins an absolute majority in Sunday’s second round of legislative elections, the leading far-Right figure Marine Le Pen said on Tuesday.

The National Rally, under party president Jordan Bardella, secured the most votes in the first round of the surprise legislative elections on June 30 but not enough to claim overall victory.

“We cannot accept going into government if we cannot act,” Le Pen said in an interview on Tuesday with public broadcaster France Inter. “It would be the worst betrayal of our voters.”

Round one on Sunday propelled the National Rally closer than ever to government but also left open the possibility that voters could yet block its path to power in the second and final round on July 7.

Le Pen’s party and its opponents in the Left-wing alliance of the New Popular Front as well as President Emmanuel Macron’s weakened centrists are all seeking to deny the far right an absolute majority by rallying supporters in high-stakes campaigning this week.

The National Rally and its allies could secure a working majority in parliament in the final round on Sunday. Or they could fall short, stymied at the last hurdle by opponents who still hope to prevent the formation of France’s first far-Right government since World War II.

Both scenarios are fraught with uncertainty for France and its influence in Europe and beyond.

With the stakes high and the time frame compressed, the election has overshadowed preparations for Paris to host the Olympic Games, which open in less than a month.

To block the far-Right’s ascent to government, some Leftist and Centrist candidates who did not win outright in round one but qualified for round two have stepped aside. Candidates have until 6 pm on Tuesday to decide whether to stay in the race or withdraw. By pulling out, opponents of the National Rally might divert votes to other candidates better positioned to beat the far-Right on Sunday.

“We have one objective today (and that) to deny an absolute majority to the National Rally,” said François Ruffin of the hard-Left France Unbowed party that is part of the new National Front alliance along with French greens, Socialists and Communists.

Macron dissolved the National Assembly and called the election on June 9, after a defeat in French voting for the European Parliament.