The Carrick, Cumnock and Doon Valley constituency was created as part of the Third Periodical Review of Parliamentary constituencies in 1983. It was a direct successor to the former
South Ayrshire constituency which covered the modern electoral wards of Doon Valley, Cumnock & New Cumnock, Ballochmyle, Girvan & South Carrick and Maybole, North Carrick & Coylton alongside
Annbank which forms part of the Kyle electoral ward. The new constituency stretched across the former South Ayrshire constituency whilst also incorporating the council estate of
Kincaidston in
Ayr and a large, unpopulated section of
Prestwick, east of
Prestwick airport. Significant boundary change took place as part of the Fourth Periodical Review in time for the 1997 general election. Large swathes of the
Ayr constituency were transferred to the Carrick, Cumnock and Doon Valley constituency, altering the demographic of both seats. The Conservative-voting suburbs of
Alloway,
Doonfoot, Castlehill, Masonhill and Holmston were incorporated into Carrick, Cumnock and Doon Valley alongside the council estates of south
Belmont and part of
Forehill. The east section of Prestwick which was previously contained within Carrick, Cumnock and Doon Valley was transferred back to Ayr. For the 2005 general election the Carrick, Cumnock and Doon Valley constituency was divided into three constituencies, with Mossblown, Annbank and St. Quivox forming part of the
Central Ayrshire constituency alongside
Irvine, Kyle, Prestwick,
Troon and part of Ayr (Heathfield) and
Kilwinning. The Ballochmyle electoral ward was added to
Kilmarnock and Loudoun whilst the remainder of the constituency was joined to the Labour-Conservative marginal town of Ayr to form the
Ayr, Carrick and Cumnock seat. These boundaries currently remain in place today. ==Constituency profile and voting patterns==