Alyn and Deeside (UK Parliament constituency)

Alyn and Deeside (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 Alyn and Deeside Senedd constituency was created with the same boundaries in 1999.

The constituency retained its name and gained wards, as part of the 2023 Periodic Review of Westminster constituencies and under the June 2023 final recommendations of the Boundary Commission for Wales for the 2024 United Kingdom general election.

Constituency profile
This Welsh seat on the English border is part of the industrial hinterland north of Wrexham and west of Chester, with large employers including Toyota, BAE and Airbus. The main population areas in the current seat include Shotton, Connah's Quay, Buckley, Hawarden and Caergwrle. It was formerly known as East Flintshire until the 1983 boundary review, in which it was renamed after the Alyn and Deeside district created in 1974.

Boundaries
1983–1997: The District of Alyn and Deeside, and the Borough of Wrexham Maelor wards 13 and 14.

1997–2010: The District of Alyn and Deeside.

2010–2024: The Flintshire County electoral divisions of Aston, Broughton North East, Broughton South, Buckley Bistre East, Buckley Bistre West, Buckley Mountain, Buckley Pentrobin, Caergwrle, Connah's Quay Central, Connah's Quay Golftyn, Connah's Quay South, Connah's Quay Wepre, Ewloe, Hawarden, Higher Kinnerton, Hope, Llanfynydd, Mancot, Penyffordd, Queensferry, Saltney Mold Junction, Saltney Stonebridge, Sealand, Shotton East, Shotton Higher, Shotton West, and Treuddyn.

2024–present: From the 2024 United Kingdom general election the seat of Alyn and Deeside was expanded towards Flint as a result of the abolition of the Delyn constituency in the 2023 Periodic Review of Westminster constituencies. It consists of the Flintshire electoral divisions:


 * Aston, Broughton North East, Broughton South, Buckley Bistre East, Buckley Bistre West, Buckley Mountain, Buckley Pentrobin, Caergwrle, Connah’s Quay Central, Connah’s Quay Golftyn, Connah's Quay South, Connah's Quay Wepre, Ewloe, Hawarden, Higher Kinnerton, Hope, Llanfynydd, Mancot, Penyffordd, Queensferry, Saltney Mold Junction, Saltney Stonebridge, Sealand, Shotton East, Shotton Higher, Shotton West, Treuddyn, Bagillt East, Bagillt West, Flint Castle, Flint Coleshill, Flint Oakenholt, and Flint Trelawny.

Elections in the 2010s
Of the 121 rejected ballots:
 * 103 were either unmarked or it was uncertain who the vote was for.
 * 17 voted for more than one candidate.
 * 1 had want of official mark.

Of the 84 rejected ballots:
 * 63 were either unmarked or it was uncertain who the vote was for.
 * 17 voted for more than one candidate.
 * 4 had writing or mark by which the voter could be identified.

Of the 50 rejected ballots: In February 2015, the Conservative Party inadvertently leaked a list of non-target seats considered safe Labour, or where winning was considered highly unlikely, which included Alyn and Deeside. Independent Phil Woods announced he would stand, but did not do so.
 * 41 were either unmarked or it was uncertain who the vote was for.
 * 9 voted for more than one candidate.