Alyn and Deeside (Welsh: Alun a Glannau Dyfrdwy) is a parliamentary constituency represented in the House of Commons of the Parliament of the United Kingdom (at Westminster). The constituency was created in 1983, and it elects one Member of Parliament (MP) by the first-past-the-post method of election. The constituency has always elected Labour MPs, although in the landslide Conservative Party victory in the 1983 general election, the Conservatives were able to mount a strong challenge.