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David Cameron finally gave an answer to the question on everyone's lips today at Prime Minister's Question .

Labour MP Richard Burgon used today's heated PMQs session to ask: "If the British people vote to leave the European Union, will the Prime Minister resign, yes or no?"

There has been much speculation about Mr Cameron's future in the top job as his party has been torn in two by the EU referendum campaign.

Some 141 Conservative MPs are thought to be supportive of Britain leaving the EU.

And a BBC survey this week revealed twice as many local Tory chairmen supported Brexit as did remaining in the Union.

To roars and footstamping from the Tory benches, Mr Cameron gave a one word answer.

He said: "No."

Read more:PMQs live: Jeremy Corbyn fires his 100th shot at David Cameron in Prime Minister's Questions

The split in his own grassroots raised questions about whether Mr Cameron would be able to claim to have the backing of his party in the case of an "out" vote.

Ahead of May's general election, David Cameron told the BBC he would not seek a third term as Prime Minister - which sparked a 'beauty contest' of high ranking Tories lining up to replace him.

Boris Johnson, who came out for Brexit last month, is favourite to replace him, followed by George Osborne, Theresa May, Michael Gove and Sajid Javid.