At the May 2005 general election the seat was one of the Conservatives' top targets as Lamb was defending a majority of just 483 against a relatively high-profile Tory, Iain Dale. However, Lamb instead increased his majority to 10,606. Although the seat had been Labour for 25 years since World War II, Labour have slumped to a distant third in recent years.
Following a review of parliamentary representation in Norfolk, the Boundary Commission for England has created a new constituency of Broadland based on the local government region of that name. However, the boundaries of the constituency do not match the local authority with six wards (The Raynham, Wemsum, Walsingham, Astley, Fakenham South and North) now removed from the North Norfolk Constituency and placed in to the new Broadland seat, which has also become a top Liberal Democrat target.