The title is an allusion to Mr. Smith Goes to Washington. Both the film and this episode feature an election to find a replacement for a senator who dies before the end of his term.
Mayor Quimby regrets building his shrill-voiced girlfriend an opera house, which was done in Citizen Kane.
Your Mom: Krusty accidentally does this when he makes a speech to Latin-American voters—he says, "I'm going to vomit on your mother's grave," without realizing what it meant. Upon being informed by a translator, Krusty understands why his maid quit on him.