a clay theater ticket?...........
Yeah, although in the 1960s they were changed to Ali theater tickets. /rimshot
Clay was cheap and it was a one-off event, so this made sense. For Athenian ostracism, broken pieces of pottery (ostraca) were used to cast the votes for who was to be banned for ten years. Obviously the DNC has roots back that far. When Themistocles was banned -- clearly a lawfare operation -- prepared tokens with his name were handed to arriving voters who were not literate, and in effect, it stuffed the ballot box. The leftover 'ballots' were dumped in a nearby drain plynth after the vote, and were found in modern times.