The United Kingdom was treated as a single constituency for the purpose of the referendum. Lord Ashcroft (see Kevin's 3.04pm post from yesterday) analysed the voting based on the way people had voted in the 2015 general election. Any other way of interpreting the data is likely to be tendentious and potentially misleading. Talk of "leave constituencies" and "remain constituencies" is one such way of trying to hoodwink people into thinking that leave achieved a resounding victory. They didn't. It was tight. It's been said, for example, that there were many 'leave constituencies" in the Labour heartlands in the north. That is misleading because in most or all of those constituencies a majority of Labour voters voted remain in the referendum. Lies, damn lies and statistics.