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As a result of a wager, Hoss and Joe Cartwright decide to enter politics, each supporting an opposing mayor candidate for the upcoming Virginia City election. Comic chaos ensues when both brothers become campaign managers for their respective candidates, and are thus forced to suck up to the man holding the deciding vote: Their own father Ben! Tom Bosley and Wally Cox guest-star as competing candidates Titus Simpson and Phineas Burke. Written by Robert Vincent Wright, "The Last Vote" first aired on October 20, 1968.