The fictional borough in The Pickwick Papers where a famous election takes place is Eatanswill. Dickens uses the contest there to satirise the noise, personalities, slogans, and partisan manipulation of Victorian parliamentary politics.
The Eatanswill election appears in one of the most memorable episodes of Dickens's first novel, published serially from 1836 to 1837. Samuel Pickwick and his companions arrive while the rival candidates' supporters are campaigning intensely. The two factions, associated with the Blues and the Buffs, compete through processions, speeches, newspapers, hospitality, and personal attacks rather than through calm discussion of policy.
Eatanswill is not a real borough, although it is generally understood as a comic fictional portrait of English electoral towns. Its name itself sounds like a joke about political appetite and self-interest. The episode reflects the atmosphere of elections before the secret ballot was introduced in 1872, when public voting, local influence, patronage, and pressure could all shape results. Coketown belongs to Hard Times, while Bleak House is both a Dickens novel and a location, so neither is the election borough in The Pickwick Papers.