Notwithstanding the provisions of any special act or sections 7-324 to 7-329, inclusive, any district established in 1839 by special act may, by majority of the voters present at the annual meeting or any special meeting of the district called in accordance with the provisions of such special act, provide for the following: (1) An increase in the number of commissioners from three to five, (2) voting by voting tabulator from six o’clock a.m. to eight o’clock p.m. for an annual or special meeting, and (3) notice, in writing, by a person intending to run for commissioner to the clerk of the city or town in which such district is located of such person’s intent to run not later than thirty days prior to such meeting. Such clerk shall publish the names of each such candidate and a description of any issue to be placed on the ballot of such meeting in a newspaper having a general circulation in such city or town, not later than fifteen days prior to such meeting.