The highly eventful Parliament of 1715 was dominated by the political struggles occasioned by the transition to the new royal dynasty, the House of Hanover, following the death of Queen Anne on 1 August 1714. The new parliament should have run a three-year course to 1718, but the passage of the Septennial Act in 1716 extended its life, and that of each succeeding parliament, from three years to seven. The law was not to be changed again until the Parliament Act of 1911 which shortened the period between general elections from seven to five years.
In the months before the elections took place in January 1715, George I, on the advice of his Whig ministers, initiated a near-complete purge of Tories from every level of office-holding. Everywhere, Tories were regarded as potential supporters of the exiled Stuart dynasty, and their places were filled by Whigs whose loyalty to the protestant succession was beyond question.<