Mr Farage, appearing on ITV’s This Morning, made the bold claim even after the Brexit Party failed to win a seat in last month’s election, with just two per cent of the vote.
It did, however, dominate in the European elections in May last year, winning 29 of the 73 seats just four months after launching.
Mr Farage, asked what power the party actually has now Brexit day is near, said: “Well hang on, we won 29 seats in the European Elections and I think the Conservative Party looked in the mirror in June and July and said: ‘If we don’t adapt, the Brexit Party will wipe us out.’”
Referring to his election decision to stand down Brexit Party candidates in Tory-held seats, Mr Farage said: “They took every single one of our policies and so much so that I still decide in half the country: ‘Look, you’re doing the right thing, get on with it.’
“So they are now making a series of promises. I will do my best to try and keep them to my promises.”
He continued: “History may say it was the shortest-lived but most successful party ever.”
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Mr Farage said the single-issue party will be put “on care and maintenance [during the Brexit process], just in case they make a mess of it”.
In the same interview, he also claimed he had rejected approaches to appear on ITV’s “I’m a Celebrity” because he needed to “stick around” and oversee Brexit.