LONDON—The race to succeed British Prime Minister Boris Johnson was whittled down to four candidates Monday, with former Chancellor of the Exchequer Rishi Sunak continuing to lead the highly unpredictable contest to find the country’s new leader.
Mr. Sunak extended his lead, getting the backing of 115 Conservative lawmakers, needing just five more votes to secure a place in the final-two runoff. Penny Mordaunt, the race’s dark horse, held on to second place with 82 votes and Foreign Secretary Liz Truss closed the gap in third, securing 71 backers. Kemi Badenoch, a former equalities minister, got fourth place with 58 votes. Tom Tugendhat, a centrist Conservative, was eliminated.