Nottingham was a parliamentary borough in Nottinghamshire, which elected two Members of Parliament (MPs) to the House of Commons from 1295.

In the mid eighteenth century it was influenced by the large local landowners the Duke of Newcastle for the Whigs and Lord Middleton for the Tories and as a consequence would tend to return MP from each party.

Walter's election was declared void, on petition, due to bribery by his agents, on 23 March 1843, causing a by-election.

Mellor resigned after being appointed a Judge of the Queen's Bench Division of the High Court of Justice, causing a by-election.

The election, "won by violence" and bribery was declared void on petition, causing a by-election.