Ann Widdecombe said the Brexit Party would support Boris Johnson in an election, as long as he kept his promise to leave the European Union on October 31.
However the Brexit Party MEP told talkRADIO’s Julia Hartley-Brewer she was willing to “fight” the Prime Minister if he went back on his “do or die” Brexit pledge.
“If he starts re-warming up the [Theresa] May deal which has a lot wrong with it other than the backstop, then at that point we will not support him, and we will fight him in any subsequent general election,” she said.
The former Conservative MP said after “three years of games” it is clear the current Parliament is “incapable” of breaking the Brexit deadlock and that a snap election is the only solution.
However, Ms Widdecombe said there was no point in repeating Wednesday’s call for a snap poll if it would once again be thwarted by Labour.
“Given there’s resistance to that I don’t really see the point of just bringing a motion to have a general election back and back again. It smacks of what Mrs May was doing with her deal,” she said.
“It is extremely rare for an opposition to run away from a general election and the more they do that the more fed up the public will become.”
Commons leader Jacob Rees-Mogg said a motion for a general election has been scheduled for Monday, which would require the support of two-thirds of MPs.
An opposition Bill that would block a no-deal Brexit could become law on Monday, and Jeremy Corbyn has said he would only back an election once no deal is off the table.
Monday is the final day of Parliament before it is suspended ahead of the Queen’s Speech.