Former Conservative leadership candidate David Davis has given Boris Johnson his backing to be the next leader of the Tories.
The MP for Haltemprice and Howden lost out to David Cameron in the 2005 contest.
(1/2) The biggest issue over coming years will be managing Brexit, improving UK trade position, controlling borders and enhancing democracy
(2/2) That needs vision, optimism, energy and drive – that is why I am backing @borisjohnson for Conservative leader
ITV News also understands that Andrea Leadsom, who was widely expected to launch her own leadership bid, is backing the former London mayor.
Michael Gove has become the first of the Conservative leadership candidates to publish his tax returns during the campaign.
Theresa May has secured the backing of Philip Hammond in her bid to succeed David Cameron ahead of the first round of voting on Tuesday.
A poll in the Sun on Sunday suggests the home secretary is able to count on the backing of six out of 10 Conservative MPs.