A new poll suggests that 61% of Conservative supporters want Britain to leave the European Union provided it could maintain its close trading links.
The survey, carried by ComRes for The Independent, appears to show that 54% of voters feel the same way.
It comes on the day the Tory vice chairman Michael Fabricant suggested his party make an election pact with the UK Independence Party, which wants to quit the EU.
More top news
A 28-year-old man has been charged over the stabbing of a surgeon outside a mosque.
A quiet night to come across the UK.
Tom Watson will outline plans to force bookmakers "driven by greed" to pay a new levy to help fund NHS treatment of problem gamblers.