Getting the timing right: Cameron weighs up the pros and cons of a June 2016 referendum

The EU referendum could be held as soon as June – which leaves little time for David Cameron to negotiate the reforms he wants to make. On the other hand, says Sara Hobolt, the PM will be wary of delaying the vote and falling prey to a mid-term slump in popularity. Should he call the referendum as soon as possible – or give himself more time to win over his European peers?