Despite the Prime Minister’s prediction that the gaps shown by the polls will begin to narrow in the five days preceding the election, a Channel 2 survey released last night still shows a 20% margin of victory for Ariel Sharon. Barak has not given up, however, and his supporters continue to flood main intersections with campaign literature. Shlomit Amichai, Director-General of the Education Ministry, called upon school principals today not to allow students to take part in electioneering today.