The "old" generation (voting to leave the EU) clearly understands the value of their vote(s).
If they'd had 75% turnout they may have swung the election.
In mid 2013 there were about 5.8m people between 18 and 24.
Which is what percentage of the voting population?
If we assume all of them can vote 5.8m is 11% of 51.8m.
I would assume that is not the case here, but its something to consider.
Instead, maybe they actually were apathic, and their votes would be roughly 50-50 - so Leave could still win.
There were the Remain votes, the Leave votes, but then there the Protest votes -- which from my perspective were votes that said "I want to Remain, but dammit I don't like how things are going right now".
Are election days national holidays in the UK?