Mr Sunak enjoys the backing of more than 100 Tory MPs, his closest rival Penny Mordaunt could only boast of 25 supporters.
Rishi Sunak is said to have the public backing of 110 nominations by conservative MPs.
Boris Johnson and Rishi Sunak are leading the potential contenders to replace Prime Minister Liz Truss.
“I cannot deliver the mandate on which I was elected,” Ms Truss said on Thursday afternoon.
More than half of British voters think Liz Truss should resign as prime minister and 80 per cent blame the government for the rising cost of living.
President Muhammadu Buhari has congratulated Liz Truss as she assumes office as the new prime minister of Britain.
“Putin is planning to do to other parts of Ukraine, indeed all of Ukraine, what he has done to Crimea,” said Mr Johnson
Candidates populated the Sunday morning broadcast round, with Messrs Hunt, Javid, Shapps and Tugendhat all making appearances to promote their campaigns.
Disgraced UK prime minister Boris Johnson has planned a July wedding party with his wife, Carrie, at his prime ministerial retreat, multiple sources have said.
