The MP Nadine Dorries has told ITV News that UKIP's local election result success is "the day the political landscape significantly shifted" and hopes it will serve as a wake-up call to David Cameron.
Ms Dorries was suspended from the Conservative Party after travelling to Australia to take part in the ITV reality TV show I'm A Celebrity!
"Today will always be the day the political landscape significantly shifted.
"The rise of UKIP will hopefully force David Cameron and George Osborne to reconnect with true Conservative values and work hard over the next two years to win back the core Tory vote they appeared to be determined to jettison as part of their personal quest to modernise the Conservative Party."
UKIP leader Nigel Farage claimed a "sea change" in British politics as they gained more than 140 council seats in the local elections.
There is no question that the day belongs to UKIP and Nigel Farage. The party has gained over 100 seats and won about a quarter of the vote.
In an article for ITV News, the Conservative MP Adam Afriyie calls for a guarantee on an in-out EU referendum to deal with the UKIP threat.