The superintendent shall arrange for the computation and canvassing of the returns of votes cast at each primary and election at his or her office or at some other convenient public place at the county seat or municipality with accommodations for those present insofar as space permits. An interested candidate or his or her representative shall be permitted to keep or check his or her own computation of the votes cast in the several precincts as the returns from the same are read, as directed in this article. The superintendent shall give at least one week's notice prior to the primary or election by publishing same in a conspicuous place in the county courthouse or city hall, of the time and place when and where he or she will commence and hold his or her sessions for the computation and canvassing of the returns; and he or she shall keep copies of such notice posted in his or her office during such period. The superintendent shall procure a sufficient number of blank forms of returns made out in the proper manner and headed as the nature of the primary or election may require, for making out full and fair statements of all votes which shall have been cast within the county or any precinct therein, according to the returns from the several precincts thereof, for any person voted for therein, or upon any question voted upon therein. The assistants of the superintendent in the computation and canvassing of the votes shall be first sworn by the superintendent to perform their duties impartially and not to read, write, count, or certify any return or vote in a false or fraudulent manner.