A. At least thirty minutes before the opening of the polls the precinct election officers shall arrive at the polling place and set up the voting booths so that they will be in clear view of the election officers. They shall open and check the ballots, supplies, records and forms and post the sample ballots and instructions to voters.
B. As soon as the polls have been closed and the last qualified voter has voted, the voting or marking devices shall be sealed against further voting. All unused ballots shall be placed in a container and sealed for return to the board of supervisors or other officer in charge of elections.