Until 1974, much of the seat remained as part of the Woodstock and latterly Banbury constituency.[5] From 1974 to 1983, the area was included in the Mid Oxfordshire seat along with parts of Bullingdon and Ploughley[citation needed]. Since 1983, Witney has been a full parliamentary seat in its own right and comprises the whole of the District of West Oxfordshire with surrounding villages attached until 1997.
Carterton is the second-largest populated town with 14,000[citation needed] and is situated alongside RAF Brize Norton which is vital to the local economy, being one of the largest and busiest Royal Air Force stations in the country[citation needed].
At the 2001 general election, David Cameron was elected as MP for Witney. Cameron was re-elected to a fourth term as MP for the constituency at the 2015 general election with a majority of 25,155, the highest in his political career; on that occasion, his Conservative Party won a surprise overall majority in the House of Commons, taking 330 seats to the opposition Labour Party's 232. However, on 24 June 2016, Cameron announced that he would resign as prime minister by that October due to the outcome of the EU Referendum the previous day, in which 51.9% of those who voted supported leaving the EU. Accordingly, Cameron stepped down as premier that July, on the election of Theresa May as Conservative Party leader and prime minister. On 12 September 2016, it was announced that Cameron would resign as MP for Witney.[7] This triggered a by-election, which was won by Robert Courts, also a Conservative, albeit with a significantly reduced majority. His vote share subsequently rose to 55% at both the 2017 and 2019 general elections.
Before the 2019 general election, the Liberal Democrats and Green Party agreed not to run against each other as part of a "Unite to Remain" alliance.[8] This led to Andrew Prosser, who had been selected as the Green Party's prospective candidate [9] standing down.
The District of West Oxfordshire wards of Ascott and Shipton, Aston Bampton and Standlake, Bampton, Bladon and Cassington, Brize Norton and Curbridge, Burford, Carterton North, Carterton South, Chadlington, Charlbury, Chipping Norton, Clanfield and Shilton, Combe and Stonesfield, Ducklington, Enstone, Eynsham, Filkins and Langford, Finstock and Leafield, Freeland and Hanborough, Hailey, Kingham, Milton-under-Wychwood, Minster Lovell, North Leigh, Rollright, Stanton Harcourt, Witney East, Witney North, Witney South, Witney West, and Woodstock; and
The District of Cherwell wards of Gosford, North West Kidlington, South East Kidlington, and Yarnton.[10]
The new constituency was largely formed from the majority of the abolished constituency of Mid-Oxon, including the settlements of Witney, Carterton, Woodstock and Kidlington. Chipping Norton and surrounding rural areas were transferred from the Banbury constituency.
The remaining two wards of the District of West Oxfordshire (Bartons, and Tackley and Wooton) were transferred from Banbury. Kidlington transferred to Oxford West and Abingdon.
The District of Vale of White Horse wards of: Faringdon; Kingston Bagpuize; Thames; Watchfield & Shrivenham.
The District of West Oxfordshire wards of: Alvescot and Filkins; Ascott and Shipton; Bampton and Clanfield; Brize Norton and Shilton; Burford; Carterton North East; Carterton North West; Carterton South; Ducklington; Hailey, Minster Lovell and Leafield; Milton-under-Wychwood; Standlake, Aston and Stanton Harcourt; Witney Central; Witney East; Witney North; Witney South; Witney West.[13]
Major changes, with Chipping Norton and Charlbury transferred to Banbury, and Woodstock and surrounding areas included in the newly created constituency of Bicester and Woodstock. Partly offset by the transfer in of parts of the District of Vale of White Horse previously in the Wantage constituency, including the town of Faringdon.