Homer is running for Mayor and he is out campaigning. The night of the mayoral debates come and Homer kills it on stage, making the current mayor, Diamon Joe Quimby look stupid and sweat in his expensive suit. Election day comes and Homer wins by a landslide. Quimby won't take this lying down and sets up a plan. On Homer's celebratory parade, Quimby snipes him from a nearby rooftop. Homer dies instantly and thus, Quimby is the default fallback choice. And he continues his sleazy reign as Mayor.