Secondly, the last time votes for parties which did not make the 3% hurdle came to about 19% of the total. This means that 19% of people who excercized their right to vote would not be represented in the parliamentary decision-making (and the threshold for a coalition government declines). To me, the lesson of this is that voters should only consider parties which have a realistic chance of making the 3% hurdle. This is no time to waste votes!
Finally, I think Greeks should avoid tactical voting. I recently heard the following comment: “I now have to vote for this idiot Samaras so that we don’t get this idiot Tsipras!” My suggestion to this person would be to vote for neither and figure out which of the other candidates might be better.