Richard Tice, from campaign group Leave means Leave, claimed Britons were suffering from election “fatigue” and would unlikely want a second European Union independence referendum, however, insisted it opens the doors for Labour, the SNP and Lib Dems to stop the divorce process.
Speaking to Talkradio, he said he feared Jeremy Corbyn and his allies in Westminster would not even turn up to the Brussels talks due to start 11 days after the June 8 General Election.
Mr Tice said: “There is huge fatigue out there amongst the public-at-large, frankly with politics and many politicians.
Mr Tice said Corbyn threatened the entire Brexit process.
“I think it would be a coalition of chaos that would descend very quickly, and don’t underestimate the impact of the markets…”
He added: “No-one is saying the unthinkable, which I think if you had a coalition of chaos very quickly they would turn round and look each other and say, actually, let’s stop Brexit full-stop.
“That is the reality, that is my fear, and imagine what chaos that would bring. You’d have the Labour Party saying we can stop this, that’s the Lib Dem and SNP position.
“The whole thing would unravel, I suspect they wouldn’t even show up to the Brexit negotiations and just say we are going to start again.”
The Conservatives have also joined the attack on Labour, with Dominic Raab accusing their Brexit spokesman of siding with the EU during negotiations.
Sir Keir Starmer suggested Theresa May had failed in her first negotiations with the bloc, attempting to secure the rights of UK nationals living on the continent.
Speaking on Sky News, Mr Raab said Mrs May’s negotiating team would attempt to reach a unilateral deal for UK and EU citizens as a priority.
Snap election 2017: The pictures politicians may not want you to see Sat, May 27, 2017
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Protests, fights and daleks, it's all happening as the politicians hit the campaign trail for the snap election
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Jeremy Corbyn during a visit to Hackney Marshes Football Pitches, to highlight Labour's manifesto commitment to ensure 5% of the Premier League's television rights income is diverted to the grassroots game, during a General Election campaign
He insisted it was Labour actually “hanging out to dry” British citizens living inside the EU and not the Conservatives.
“The EU said no, Not until the formal negotiations begin,” He said.
“Keir, the Lib Dems and Labour talk, we act.
“How can you call it a failure? Keir, you don’t know whose side you’re on.”