Ok, to redress the balance

:-
The problem for out is they have to persuade people how much better things would be outside the EU; even if they do, it's asking people to take a chance/risk. So far it's mainly been how terrible the EU is, not much positive about the alternative.
People know what life inside the EU is like, far from perfect, but relatively stable. Leaving is a gamble and, when it comes to it, people don't like gambles and uncertainty, particularly if it affects jobs and their own prosperity. The outers do tend to me more vocal and certain which might give an skewed view on the state of play. Those that are going to vote to remain are the apathetic silent majority, who probably haven't actually decided they are going to vote that way yet. Past elections and referendums have shown that this group end up voting for 'no change' as the safe option.
The only way i can see an 'out' vote is if there's a low turn out with the apathetic majority not bothering./ or people don't vote on the issue but on the popularity of the Govt. Given that all the main political parties/business/unions will be campaigning for 'in'; and the dangers of 'out' for the next 3 months, I can't see anything else but a remain vote.