A poll published by The Sun newspaper claims Ukip will win the European election, gaining 22 MEPs.
ITV New Political Editor Tom Bradby said: "It's only a poll, but it does look like we are facing a bit of a political earthquake - certainly a protest vote, the like of which we perhaps haven't seen."
According to the poll of 6,000 voters, both Ukip and Labour would send 22 MEPs to Brussels, while the Tories would secure 16 seats.
More top news
Tony Poole spent 13 years in jail for a murder he did not commit. Now he faces going back after being found guilty of killing his best pal.
The RFU has issued a two year ban to fans who hurled homophobic abuse at referee Nigel Owens at a recent England international.
A mother who told her son she was going to the supermarket - before flying to Australia - has been given a six-month suspended sentence.