Tory leadership: Boost for Rory Stewart as he wins backing of Theresa May's 'deputy' David Lidington

Rory Stewart’s bid for No 10 has received a huge boost after the rank outsider received the surprise backing of David Lidington, Theresa May’s ‘deputy’.

The international development secretary’s camp hailed the move as a “huge vote of confidence not just in Rory’s campaign, but in his ability to deliver as prime minister”.

It came as Tory MPs prepared to vote on Tuesday in the second round of voting, which has been expected to knock Mr Stewart out of the race.

He needs 14 more votes than the 19 he received last Thursday – and to overhaul Sajid Javid, the home secretary, for his leadership bid to remain alive.

Mr Lidington had backed Matt Hancock in the first round, but has refused to follow the health secretary’s decision to switch to Boris Johnson, still the overwhelming favourite to reach Downing Street.

His support will help the Stewart campaign convince Tories that the momentum is with their candidate, after his strong showing in Sunday night’s live TV debate.

“Rory is incredibly proud to have the support of David Lidington – the deputy prime minister,” a spokesman said.

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