LONDON (AP) — Boris Johnson, Britain’s blustering Brexit campaigner, was chosen as the U.K.’s next prime minister on Tuesday, with a resounding mandate from the Conservative Party but conflicting demands from a politically divided country.

Johnson is set to become prime minister today after winning an election to lead the governing Conservatives. He will have just over three months to make good on his promise to lead the U.K. out of the European Union by Oct. 31.

Famed for his bravado, quips in Latin and blond mop of hair , Johnson easily defeated Conservative rival Jeremy Hunt, winning two-thirds of the votes of about 160,000 party members across the U.K. He will become prime minister once Queen Elizabeth II formally asks him to form a government, replacing Theresa May.

The embattled May announced her resignation last month after Parliament repeatedly rejected the withdrawal agreement she struck with the 28-nation bloc, leaving Britain stranded in Brexit limbo. The U.K.’s departure from the EU was delayed from its long scheduled exit in March.

Johnson radiated optimism in a brief victory speech to hundreds of party members and lawmakers, pledging to “deliver Brexit, unite the country and defeat Jeremy Corbyn,” leader of the opposition Labour Party.

“I say to all the doubters: ‘Dude, we are going to energize the country, we are going to get Brexit done,'” said Johnson, a former London mayor and British foreign secretary.

Hunt, a stolid politician compared to the flamboyant Johnson , said he was sure his rival would “do a great job.”

“He’s got optimism, enthusiasm, he puts a smile on people’s face and he has total, unshakable confidence in our amazing country,” said Hunt, who is likely to be removed as foreign secretary by the new prime minister.

Johnson wooed Conservatives by promising to succeed where May had failed and lead the U.K. out of the EU — with or without a divorce deal.

Johnson insists he can get the EU to renegotiate, something the bloc insists it won’t do. If not, he says Britain must leave the EU by the Oct. 31 deadline, “come what may.”

The EU is adamant that the deal with May will stand, saying Britain has to take it or leave it.

Michel Barnier, the bloc’s chief Brexit negotiator, said he looked forward “to working constructively” with the new Conservative leader “to facilitate the ratification of the Withdrawal Agreement.”

Economists warn that a no-deal Brexit would disrupt trade and plunge the U.K. into recession . Fears that Britain is inching closer to crashing out of the bloc weighed on the pound once again Tuesday. The currency was down another 0.3 percent at $1.2450, nearly a two-year low.

Carolyn Fairbairn, director of the Confederation of British Industry, said businesses needed a withdrawal agreement with the EU to restore confidence that has been badly shaken by uncertainty about the terms of Brexit.