Adam Afriyie's plan to steer leadership-backed legislation on an EU referendum through Parliament has been criticised by fellow Tory MP James Wharton.
Wharton suggested the move would delay and even "kill" the private member's bill he introduced in July, and hoped Afriyie would "rethink" his approach.
He said: "We need to build as broad a base of support for the bill as we can if we are to get it through Parliament and the policy of a renegotiation, followed by an in/out referendum, is the right one to do that and the right one for the country.
"I hope MPs will decline to support it as the ultimate impact might well be to kill my bill, which would only help those who don't want any referendum at all."
More top news
Ed Miliband is demanding the Conservatives must "come clean" over their plans for the NHS amid claims of greater privatisation
Thousands of Ethiopian Jews have taken to the streets of Tel Aviv to protest against racism and police brutality
Temperatures will be on the warm side tomorrow as much of the country looks forward to a fine bright start to the day.