Oxford West and Abingdon is a constituency[n 1] represented in the House of Commons of the UK Parliament since 2017 by Layla Moran, a Liberal Democrat.

Conservative John Patten (MP for Oxford in the 1979–1983 Parliament), held the seat from its creation until he retired in 1997.

Blackwood held the seat until the 2017 general election, when she was defeated by Liberal Democrat Layla Moran in another marginal result.

At each contest, the Labour party candidate has polled third, with the peak share of votes to date being 20.2% in 1997.

The strongest victory, in share of the vote, was that of Harris of the Liberal Democrats in 2001, a 17.8% majority (in a seven-way contest).