Frequent commenter J.T. Waldron has this to say about the poll tapes from the RTA election:
The Tucson Weekly has afforded me this opportunity to post on The Range about the missing RTA poll tapes. What are poll tapes and why do they matter? Poll tapes are receipts that are printed in each precinct at the end of the election night. They contain the vote totals that indicate the results for that particular precinct. Once printed, election workers verify the authenticity of the poll tape and its totals by signing the bottom of each poll tape. For this reason, poll tapes could serve an important auditing function, especially in conjunction with examining the ballots.
Read the rest at the Tucson Weekly