Of 130 MPs who supported John Baron's amendment, I suspect 100-110 are Tory. That is the top end of estimates. That is about half of Conservative backbenchers.
Cameron has pledged to back a Conservative MP's EU referendum bill, as Cable labelled the move potentially 'damaging' for the country.
114 Conservative backbenchers have voted in favour of a eurosceptic motion to amend the Queen's Speech in defiance of the Prime Minister.
David Cameron has denied he has buckled under pressure from his backbench MPs over the EU debate.