‘UK Independence Party (UKIP) pushed Prime Minister David Cameron’s ruling Conservative party into third place in a bellwether vote for a parliamentary seat, coming second behind the opposition Labour party.

The results, published on Friday, will worry Cameron since some polls show UKIP, which wants Britain to leave the EU, could split his party’s vote in an election for the European Parliament in May and at a national vote in 2015.

Cameron, who has promised to try to reshape Britain’s EU ties and give Britons an in/out EU membership referendum if re-elected next year, played down the result.’

Read more: UKIP embarrasses Conservatives in vote