GETTY Mr Farage believes the outcome of the referendum could 'change British politics fundamentally'

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Mr Farage yesterdy said a tight race in the EU referendum would be a “doomsday scenario” for the Conservative leadership. The UKIP leader added that a small victory for the campaign staying in the EU would lead to a host of disgruntled MPs joining the anti-EU party. Speaking about Tory Eurosceptics who have attempted to push him out of the national debate Mr Farage said: “They’re very scared of Ukip, you see. “Because what happens if Farage is seen to play a big role in the referendum? And we win – or even worse, if we lose? What happens then?”

GETTY The Ukip leader yesterday boarded an open-top double-decker battle bus as part of his campaign tour

“The doomsday scenario for these guys is that we lose the referendum 52/48 “[In that scenario] a third of the Tory Party are irreconcilable with dodgy Dave and a third of the Conservative Party come and join me and Ukip. “That is their doomsday scenario. Anything is better than that.” He claimed the referendum could cause the Conservative Party to split like Labour in the early 1980s following a civil war over Europe.

GETTY Mr Farage claimed David Cameron could face mass defections

He told the Guardian: “I think this referendum is something that could realign politics. Think back to 1975. “That personal bitterness that came out between [Roy] Jenkins [who formed the break-away SDP] and [Labour's Tony] Benn never went away. “It led to the SDP. I think there is a chance that this referendum could change British politics fundamentally.” The Ukip leader yesterday boarded an open-top double-decker battle bus to begin a national campaign tour for the in/out EU referendum.

GETTY The UKIP leader attacked the PM for 'Pretending to be Eurosceptic'