When Greece joined the Euro, the drachma had to be devalued by fourteen percent, I understand from published sources. At that time also, the Greek banks had an aggregate of several trillion dollars worth of foreign currency reserves, according to published sources of that period. What has happened since? - that a once very prosperous nation has had to ask for a bailout?
Those who would start to withdraw their funds in Euros must be those who have faith in the Euro, or their intention to re-settle elsewhere should the crisis continue and the political parties result in a stalemate. And in any case it will only be the very wealthy who will have sufficient funds to re-locate elsewhere.
The Syriza party has clearly indicated that they will not leave the Euro, but would tear up the Bailout contract.
More and more it is beginning to look that whoever wins this weekend's election, Greece is likely to stay with the Euro.
The great common-sense of the Greek people will decide what is best for the future prosperity of their nation.
Hopefully they will have a happy, clear result which will auger well for the stability and future prosperity of the Hellenic nation.