Daniel Hannan has claimed it is a "perfectly realistic scenario" that the Conservatives will win no seats in the EU elections.
The Conservative MEP candidate for the South East of England said there was a "huge feeling of anger" towards the Prime Minister as the elections approach.
"There's a perfectly realistic scenario where we get zero seats and you are then in the sort of Canada '93 territory where the centre-right is out of office for 15 years," Mr Hannan told talkRADIO's Julia Hartley-Brewer.
"Some reconfigured right-of-centre party will eventually come back, but in Canada in the intervening period they had a relatively moderate liberal government.
"What we are looking at is a prolonged period in office from a Marxist party whose leader regrets the outcome of the Cold War, and that's not something we have ever had before in Britain."
Mr Hannan will be standing against candidates from Change UK, Green Party, Labour Party, Liberal Democrats, UKIP, UK EU Party, Brexit Party, Socialist Party of Great Britain and three independents for the South East seat.
"Just the thought of Jezza [Corbyn] running the Brexit talks, that on its own is a scary enough idea, and that's why I'd ask people to think of what the real-world consequences are if we come out of this European election with a strong Labour showing and a very weak Conservative one," he added.
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