The general election saw a convincing victory for the new Liberal Tory Prime Minister Lord Liverpool, caused by Perceval's assassination. The following year he voted against the Catholic Relief bill on 24 May 1813. Bruce became firmly associated with the Ultras. He adhered rigidly to the whig constitution, opposing any relaxation of the franchise, and became associated with the Duke of Wellington's Tories. Ailesbury left the Commons on 19 April 1814, when he inherited to the courtesy earldom of Ailesbury, and the barony Bruce of Tottenham, co.Wiltshire.