Southend East was a mostly safe Conservative seat throughout its existence, although their majority was only just over 500 votes in 1966, and at the by-election in 1980 when the Conservatives held the seat by only 430 votes. From this by-election until its abolition, Southend East was held by the Conservative Teddy Taylor.
Boundaries and boundary changes
1950–1955
The County Borough of Southend-on-Sea wards of All Saints, Pier, Shoebury, Southchurch, and Thorpe; and
The County Borough of Southend-on-Sea wards of All Saints, Milton, Pier, Shoebury, Southchurch, Temple Sutton, Thorpe and Victoria.[1]
Realignment of boundary with Southend West. The Rural District of Rochford was transferred back to the re-established constituency of South East Essex.
1983–1997
The Borough of Southend-on-Sea wards of Milton, St Luke's, Shoebury, Southchurch, Thorpe, and Victoria.[2]
The constituency included Southend town centre, and parts of the Borough of Southend to the east.
In 1997, Southend East was abolished and expanded to the north to include the town of Rochford once again, forming the new constituency of Rochford and Southend East.[3]
^ abCraig, Fred W. S. (1972). Boundaries of parliamentary constituencies 1885-1972;. Chichester: Political Reference Publications. ISBN0900178094. OCLC539011.