UKIP MEP, Marta Andreasen quit the Eurosceptic party this weekend and joinged the UK Conservative party in a surprise move.
Andreasen had criticised UKIP leader Nigel Farage, accusing him of treating "any views other than his own with contempt," and that "Ukip is his plaything to mould and shape in any way he sees fit, regardless of the views of others, myself included."
She said that she decided to switch to David Cameron's party after he promised a referendum on EU membership. She added "The Prime Minister's speech was a game changer."
Nigel Farage was dismissive, saying, "Having left the OECD, the European Commission and UKIP in unpleasant circumstances the Conservative Party deserve what is coming to them. The woman is impossible."
Andreasen was a Farage protegee, but after being elected distanced herself from the party and has been operating on her own, for the most part.
While it was predicted that she would either leave UKIP or be expelled, after her recent remarks, nobody expected her to join the Conservatives
Andreasen's defection comes as the Tories are hoping to win this week's Eastleigh by-election, hoping to win a seat off their Liberal Democrat coalition partners.
But, after the election, just how pleased will the Conservatives be to have another high profile Eurosceptic?
David Campbell-Bannerman MEP left UKIP for the Tories in May 2011.