I see polls are showing a 50/50 split between yes and no in Greece.
This is consistent with a theory I have to explain why so many of our democratic choices end up split close to 50/50 regardless of the issue.
The only issue most people care about is money and most elections and referendums boil down to how to share a finite pie.
The 50% of people with more wealth than the other 50% do not want to give any up.
The 50% of people with less wealth than the other 50% want to take some wealth from the other group.
Therefore most elections end up being very close to 50/50.