 Cameron announced that he would attempt to re-negotiate Britain's terms with the EU before holding an in-out referendum no later than two years after the next general election – should he still be Prime Minister.This was seen as a move to appease Eurosceptics within his own party as well as an attempt to regain voters who had been switching allegiance to UKIP since the previous election.Upon the Conservatives surprise majority victory in the 2015 general election, Cameron upheld his pledge and announced the date for the referendum to be 23 June 2016.