The vote went through in the 1970s twice without any arguments .....as I voted in both for trade - plus it was a vote just for trade not a European Parliament......
But the point is, people campaigned against it. And we had another vote. So surely that establishes the principle you can have more than 1 vote on an issue.
I'm not pro or anti brexit either. But we can be asked what we think again if the conditions makes sense too.