If the Thursday vote results in a majority voting for Britain to leave the EU, it will have as much effect as electing Republicans to repeal Obamacare.
The vote has no legal effect. It is only an advisory vote. The Conservative Party headed by David Cameron opposes Brexit.
The people can vote all they want, but it is the Party that chooses what to do.
That’s not to say a Leave vote is without consequences.
At least the EU doesn’t pretend that its leaders are elected. In my favorite rant by UKIP’s Mr Nigel Farage, he shouts at them, “Who voted for you?!?”
https://www.yahoo.com/news/britain-may-never-trigger-eu-divorce-diplomats-222751444.html?ref=gs