Canterbury is a constituency^{[n 1]} in Kent represented in the House of Commons of the UK Parliament since 2017 by Rosie Duffield of the Labour Party.^{[n 2]}

The seat dates to the earliest century of regular parliaments, in 1295; it elected two MPs until 1885, electing one thereafter, before being altered by the Representation of the People Act 1918 (the later-termed "Fourth Reform Act", the first being in 1832). Currently, the electorate (the total of people eligible to vote) is much greater than the average nationwide (the electoral quota); this is termed under-apportionment of representation.

The seat takes in the cathedral and university city of Canterbury, rural villages to the south, and the seaside resort of Whitstable to the north. Full time students make up around a quarter of the electorate.^[4]

Constitutional status of seat

The widened Canterbury constituency was formed from an expansion of the narrow parliamentary borough (or simply borough) of the same name that existed from 1295 to 1918. This had elected two MPs from 1295 (the Model Parliament) until 1885, and then one until 1918.

Political history

Before the seat was reformed the politics of the town were greatly influenced by Canterbury Cathedral and the Archbishop of Canterbury.^[5]

From 1835 (where a Conservative was elected on petition) until 2017, the local electorate elected mostly candidates of the Conservative Party (with the exceptions of the elections of Independent Unionist Francis Bennett-Goldney, MP from 1910 to 1918, and of a few Whigs or Liberals when Canterbury had two seats); the seat was recognised in the Guinness Book of World Records as the longest uninterrupted period of one party holding a Parliamentary seat. The election of Labour's Rosie Duffield, who won the seat by just 187 votes in the 2017 election, marked the end of a 185-year period of Canterbury almost always electing Conservative-allied MPs, the longest recorded unbroken record of party representation in British political history. Her victory in this election was largely credited to the strategies of electoral strategist Jack Wilson, who at the time was the youngest senior political adviser in British history. She kept the seat, increasing her majority in 2019.

Size of electorate

Voters locally are under-apportioned a large fraction of a seat, and so, representative – population having risen, and homes having increased in a planned way, since the 2001 United Kingdom Census from which seats are predominantly drawn. This can be illustrated in that 27,182 was the number of votes cast for the runner-up in 2019 amid a locally high, three-quarters, turnout election. Such voters for the runner-up were more than voted for the winner in 208 of the 535 English seats – and the second-highest such votes in the election, exceeded only in Stroud, by Labour's runner-up. In the same election 12,713 votes won Kingston upon Hull East; 14,557 votes won Stoke-on-Trent Central; 6,531 votes won Na h-Eileanan an Iar; 11,705 won Caithness, Sutherland and Easter Ross; 12,959 won Ynys Môn and 15,149 won South Antrim.

1918–1950: The County Borough of Canterbury, the Urban Districts of Herne Bay and Whitstable, the Rural Districts of Bridge and Elham, and the Rural District of Blean with the detached parts of the parishes of Dunkirk and Hernhill which were wholly surrounded by the rural district.

1950–1983: The County Borough of Canterbury, the Urban Districts of Herne Bay and Whitstable, and the Rural District of Bridge Blean.

1983–1997: The City of Canterbury wards of Barham Downs, Barton, Blean Forest, Chartham, Chestfield, Gorrell, Harbledown, Harbour, Little Stour, Marshside, Northgate, North Nailbourne, St Stephen's, Seasalter, Stone Street, Sturry North, Sturry South, Swalecliffe, Tankerton, Westgate, and Wincheap, and the Borough of Swale wards of Boughton and Courtenay.

1997–2010: as 1983 less the two Borough of Swale wards.

2010–present: The City of Canterbury wards of Barham Downs, Barton, Blean Forest, Chartham and Stone Street, Chestfield and Swalecliffe, Gorrell, Harbledown, Harbour, Little Stour, North Nailbourne, Northgate, St Stephen's, Seasalter, Sturry North, Sturry South, Tankerton, Westgate, and Wincheap.

• List of parliamentary constituencies in Kent