Kilmarnock and Irvine Valley (Scottish Parliament constituency)

The Kilmarnock and Irvine Valley constituency is a part-urban part-rural constituency located along the northern half of the East Ayrshire council area. Towards the south-west of the constituency is the town of Kilmarnock and its adjoining towns and villages. Kilmarnock is a former industrial town which is mostly made up of social housing, with some suburban housing towards the western end of the town. To the east of the town, along the valley of the River Irvine, is a string of industrial towns and villages such as Galston and Newmilns located within the parish of Loudoun. The region was once dependent upon the manufacture of textiles before the industry's collapse throughout the mid-20th Century. The north of the constituency is mostly made up of farmlands, with the historic town of Stewarton lying directly north of Kilmarnock along the Annick Water.

At Westminster the Kilmarnock constituency - later renamed to Kilmarnock and Loudoun - was a predominantly Labour-voting constituency which continuously returned Labour MP's to Parliament from 1945 until 2015. The constituency was one of thirteen constituencies in the United Kingdom to elect a pro-coalition National Labour MP to Parliament at the 1931 UK general election, and one of only eight to elect a National Labour MP at the 1935 UK general election. At the Scottish Parliament the constituency has gradually developed into an SNP stronghold, with SNP MSP Willie Coffrey gaining the constituency from Labour's Margaret Jamieson in 2007 and building upon his majority in both 2011 and 2016, taking the constituency with a 32.5% majority over Labour's Dave Meechan in 2016. The equivalent Westminster seat of Kilmarnock and Loudoun was gained by the SNP's Alan Brown from Labour's Cathy Jamieson on a swing of 25.9% at the 2015 UK general election.