As of 2024, the Earl of Liverpool remains the most recent prime minister to have won four successive elections.

The Tory leader was the Earl of Liverpool, who had been prime minister since his predecessor's assassination in 1812.

He was known by the courtesy title of Viscount Castlereagh, until he inherited his father's Irish peerage and became the 2nd Marquess of Londonderry in 1821.

The Leader of the Opposition in the House of Commons at the previous general election, George Tierney, disclaimed the leadership on 23 January 1821.

Whilst Catholics in Ireland—who met the normal property qualifications—had been permitted to vote since before the Union, they were still not eligible to sit in the United Kingdom Parliament.

The Association used its money and manpower to campaign for candidates to be elected into Parliament, to pressure the government from within to pass Catholic emancipation.

Its two seats were transferred to the county of Yorkshire, which from this general election became a four-seat constituency.