The Simpsons - Season 19 Episode 10: "E. Pluribus Wiggum"

In an effort to raise money with a bond issue Mayor Quimby moves up election day, making Springfield's primary election the first in the nation causing the media, candidates and political pundits to descend in the city. The townspeople soon get sick of all of the presidential candidates sucking up to them, and decide to support their own write-in candidate: Ralph Wiggum. Jon Stewart guest stars as himself.