Boris Johnson is set to become Britain's new prime minister Wednesday as Theresa May officially resigns from the post she held for three years.
The ambitious former journalist and onetime London mayor has hungered his entire political life for the top job, but he won’t enjoy a honeymoon and his premiership is already balanced on a knife edge. If he gets things wrong he could beat Lord Rockingham, who lasted just 96 days at Downing Street in 1782, to emerge as Britain's shortest-lived prime minister.
Rebels in his party, led by the outgoing chancellor of the exchequer, Philip Hammond, are making it clear that if he tries to take Britain out of the European Union without a deal having been agreed to with Brussels, they will vote with opposition parties to bring down the government to sabotage a so-called "hard Brexit." That would trigger a snap election the Conservatives would be unlikely to win.
The taste of things to come on his pledge to lead Britain out of the EU on October 31 "do or die" was delivered Monday on the eve of his victory in the race to lead the Conservative Party. Alan Duncan quit as a foreign office minister to launch an attempt to force Johnson to face a vote of confidence in the House of Commons even before being invited by the queen to enter Downing Street as prime minister.
The Speaker of the House blocked Duncan’s effort.
Only a handful of pro-EU Conservative lawmakers would be able to upset Johnson. Half-a-dozen have been in talks with Liberal Democrats to defect, according to party insiders. Up to a dozen ministers are expected to quit the cabinet before Johnson even becomes prime minister — although his loyalists say they are only falling on their swords to deny Johnson the opportunity to fire them.
The Conservatives are ruling as a minority government and are dependent on a quirky and easily-offended Northern Ireland Unionist party to give them a working majority of just two in the House of Commons. That could drop to just one, if a Conservative lawmaker is found guilty of committing sexual offenses in an upcoming trial.
With the opposition factions, aside from Northern Ireland's Democratic Unionist Party, opposed to Brexit, Johnson faces exactly the same parliamentary dilemma that undid May's leadership, a deadlocked parliament.
May herself warned recently that her successor will face the same hard parliamentary arithmetic she did. But some argue he will face even tougher mathematics. She was opposed by hardline Brexiters in her party when trying to get the withdrawal agreement negotiated with the EU through the House of Commons. Johnson, the face of Brexit, has even less room for maneuvering — he has to deliver for his fellow Brexiters at the same time as finding a way to woo or neutralize pro-EU Conservative rebels, say analysts, and to do this with a wafer-thin and diminishing majority.
The ever-upbeat Johnson appeared undaunted Tuesday in his speech marking the conclusion to a month-long leadership campaign in which both he and rival Jeremy Hunt, the current foreign secretary, crisscrossed Britain in their bid to win the support of Conservative members in a series of hustings as mail-balloting was underway. In the ballot, Johnson won 92,153 votes (66 percent) and Hunt won 46,656 votes (34 percent).
Johnson said it was an "extraordinary honor and privilege" to be elected leader, and he pledged to "energize the country."
"The campaign is over and the work begins," he added. In his trademark optimistic style Monday, Johnson promised to invigorate the country and help Britain to rediscover its "sense of mission." Throughout his leadership campaign he attacked "pessimists" talking Britain down and took aim at what he said was a sense of defeatism.
But cheery rhetoric won't be enough to convince his party rebels — nor EU leaders and their negotiators. In the last few days, EU leaders have warned that they will not roll over to accommodate Johnson. They insist the withdrawal agreement they negotiated with Theresa May and which parliament has declined to endorse three times remains their final word.
“If the approach of the new prime minister is that they’re going to tear up the withdrawal agreement, then I think we’re in trouble,” warned Ireland’s foreign minister, Simon Coveney, just hours before Johnson celebrated his win. EU leaders opened back-channels with Johnson last week.