The parliamentary constituency of Seaford was a notorious rotten borough until its disenfranchisement in the Reform Act of 1832 when representation was incorporated into the Lewes constituency. Seaford returned three members of parliament who went on to become Prime Minister. Henry Pelham (represented the town from 1717 to 1722, William Pitt the Elder from 1747 to 1754 and George Canning in 1827.