A row has broken out after Conservative Party co-chairwoman Baroness Sayeeda Warsi linked the rise of the UK Independence Party (Ukip) with the decline of the far-right British National Party.
Ukip are tipped to do well as the results pour in this morning, with the BNP falling further behind.
But Lady Warsi appeared to suggest the number of candidates fielded by the eurosceptics had risen in line with a fall in the number standing for the BNP - a link with provoked Ukip's spokesman to brand her "a b****".
Ukip spokesman Gawain Towler vented his anger on Twitter, writing: "Warsi f*** off, how dare you. B****"
The spokesman quickly deleted the post and and apologised, tweeting: "Deleted, out of order on my part".