(a) Such registrars of voters shall give written notice to the chairpersons of the town committees of the political parties of the day and place a registrar or registrars will begin the preparation, test voting and sealing of the tabulators for the election, including any additional tabulators required under § 9-238. Such notice shall be given at least one day before the work on the preparation of such tabulators begins.

(b) Each such chairperson and any candidate for an office appearing on the ballot may be present, or may designate a watcher who may be present, during the preparation of such tabulators, but such chairpersons, candidates and watchers shall not interfere with, or assist in, the preparation of the tabulators.

(c) After the registrar or registrars have prepared the tabulators, the registrars of voters, or their designees, shall test and seal such tabulators for use in the election. The chairpersons of the town committees of the political parties and any candidate for an office appearing on the ballot may also be present, or may designate a watcher who may be present, during the testing and sealing, but such chairpersons, candidates and watchers shall not interfere with the testing or sealing. All such persons who are present for the testing and sealing of the tabulators shall file a written report, as provided in § 9-245, certifying (1) to the numbers of the tabulators, (2) as to whether all the candidate and question counters are set at zero (000), (3) as to the numbers registered on the protective counters, if provided, and the numbers on the seals, (4) that the ballot is properly prepared, and (5) that the tabulators have been test-voted and found to be working properly.