Many of the recent press reporting is based on Lord Ashcroft's polling, which starts with IMHO a very small sample size:
The UK has voted to leave the European Union. On referendum day I surveyed 12,369 people after they had voted to help explain the result – who voted for which outcome, and what lay behind their decision.
Link with far more:http://lordashcroftpolls.com/2016/06...voted-and-why/