Britain’s Prime Minister Boris Johnson speaks to the house on the first day of the new Parliament, in London, Tuesday, Dec. 17, 2019. Photo: Jessica Taylor/House of Commons via AP.

LONDON — British voters have given Prime Minister Boris Johnson a commanding majority. But they have little idea what he plans to do with it.

Johnson won last week’s election with a campaign pledge to “get Brexit done” by taking Britain out of the European Union on Jan. 31, and to increase public spending after years of austerity.

Now he has to turn vague election pledges into political reality. That will start Thursday, when Johnson’s government announces its legislative plans for the coming year in a speech read out in Parliament by Queen Elizabeth II.

Anand Menon, director of the political think-tank U.K. in a Changing Europe, said that with his 80-strong majority in the 650-seat House of Commons, Johnson can govern however he wants.

“But what we don’t know is what he wants,” Menon said. “We’ve just had a so-called ‘Brexit election,’ and yet we’re not entirely certain what kind of Brexit this prime minister wants to deliver.”