1918–1950: The Borough of Winchester, the Urban District of Eastleigh and Bishopstoke, the Rural Districts of Hursley and Winchester, and the Rural District of South Stoneham except the parish of Bittern.
1950–1955: The Boroughs of Eastleigh, Romsey, and Winchester, in the Rural District of Romsey and Stockbridge the parishes of Ampfield, Chilworth, East Dean, Lockerley, Melchet Park and Plaitford, Michelmersh, Mottisfont, North Baddesley, Nursling and Rownhams, Romsey Extra, Sherfield English, and Wellow, and part of the Rural District of Winchester.
1955–1974: The Boroughs of Romsey and Winchester, and parts of the Rural Districts of Romsey and Stockbridge, and Winchester.
1974–1983: The Municipal Boroughs of Andover and Winchester, the Rural District of Andover, and parts of the Rural Districts of Romsey and Stockbridge, and Winchester.
1983–1997: The City of Winchester wards of Bishop's Sutton, Bishop's Waltham, Cheriton, Compton, Durley and Upham, Itchen Valley, Littleton, Micheldever, New Alresford, Olivers Battery, Otterbourne and Hursley, Owlesbury and Colden Common, St Barnabas, St Bartholomew, St John and All Saints, St Luke, St Michael, St Paul, Sparsholt, The Worthys, Twyford, Upper Meon Valley, and Wonston, and the District of East Hampshire wards of Alton Holybourne, Alton North East, Alton North West, Alton South East, Alton South West and Beech, Farringdon, Four Marks, Medstead, North Downland and Ropley, and West Tisted.
1997–2010: The City of Winchester.
2010–2024: The City of Winchester wards of Colden Common and Twyford, Compton and Otterbourne, Itchen Valley, Kings Worthy, Littleton and Harestock, Olivers Battery and Badger Farm, St Barnabas, St Bartholomew, St John and All Saints, St Luke, St Michael, St Paul, Sparsholt, The Alresfords, and Wonston and Micheldever, and the Borough of Eastleigh wards of Chandler's Ford East, Chandler's Ford West, Hiltingbury East, and Hiltingbury West. Parliament accepted the
Boundary Commission's
Fifth periodic review of Westminster constituencies by making slight changes to this constituency for the
2010 general election, removing 11 mostly rural wards in and around
Bishops Waltham to a new seat,
Meon Valley. In return, Winchester gained four suburban and partially urban wards at the northern edge of
Eastleigh.
2024–present: Further to the
2023 review of Westminster constituencies which became effective for the
2024 general election, the constituency is composed of the following (as they existed on 1 December 2020): • The City of Winchester wards of: Alresford & Itchen Valley; Badger Farm & Oliver’s Battery; Bishop’s Waltham; Central Meon Valley; Colden Common & Twyford; St. Barnabas; St. Bartholomew; St. Luke; St. Michael; St. Paul; The Worthys; Upper Meon Valley; Wonston & Micheldever. ''The constituency again solely comprises areas within the
City of Winchester local authority with the transfer of
Chandler's Ford and
Hiltingbury back to
Eastleigh.
Bishop's Waltham and the
Meon valley area was transferred back from the abolished
Meon Valley seat.'' == History ==