The early results posted for East Hampton Town supervisor showed the incumbent, Bill Wikinson, holding a narrow lead over Zach Cohen, the challenger in unofficial numbers from the Suffolk Board of Elections. Only 177 votes separated the Republican from the Democratic candidate, out of 5,955 cast. With this narrow a margin, absentee ballots may prove decisive; they will not be counted until next week. The county's tally as of Wednesday morning was Mr. Wilkinson with 3,066 and Mr. Cohen with 2,889.