Cardiff South and Penarth () is a

constituency An electoral (congressional, legislative, etc.) district, sometimes called a constituency, riding, or ward, is a geographical portion of a political unit, such as a country, state or province, city, or administrative region, created to provi ...

of the

Senedd The Senedd ( ; ), officially known as the Welsh Parliament in English and () in Welsh, is the devolved, unicameral legislature of Wales. A democratically elected body, Its role is to scrutinise the Welsh Government and legislate on devolve ...

. It elects one

Member of the Senedd A member of the Senedd (MS; plural: ''MSs''; ; , plural: ) is a representative elected to the Senedd (Welsh Parliament; ). There are sixty members, with forty members chosen to represent individual Senedd constituency, Senedd constituencies, a ...

by the

first past the post First-past-the-post (FPTP)—also called choose-one, first-preference plurality (FPP), or simply plurality—is a single-winner voting rule. Voters mark one candidate as their favorite, or First-preference votes, first-preference, and the cand ...

electoral system. It is typically a safe Labour seat.

Constituency profile and voting

The constituency was created for the first election to the Assembly, in 1999, with the name and boundaries of the Cardiff South and Penarth Westminster constituency. It is entirely within the

preserved county Preservation may refer to: Heritage and conservation * Preservation (library and archival science), activities aimed at prolonging the life of a record while making as few changes as possible * ''Preservation'' (magazine), published by the Nat ...

South Glamorgan South Glamorgan () is a preserved counties of Wales, preserved county of Wales. It was originally formed in 1974 under the Local Government Act 1972, as a county council area. It consisted of the county borough of Cardiff along with the south ...

. The only major boundary changes that have occurred in recent years is the inclusion of the ward of Sully into the constituency for the

2007 National Assembly for Wales election The 2007 National Assembly for Wales election was held on Thursday 3 May 2007 to elect members to the Senedd, National Assembly for Wales. It was the third general election. On the same day local elections in England and Scotland, as well as the ...

. Cardiff South and Penarth is part of the South Wales Central electoral region. As one of the eight constituencies in South Wales Central, it, along with the other constituencies in the region, elect four additional members. The other seven constituencies of the region are Cardiff Central, Cardiff North, Cardiff West,

Cynon Valley Cynon Valley () is a former coal mining valley in Wales. It lies between Rhondda and the Merthyr Valley and takes its name from the River Cynon. Aberdare is located in the north of the valley and Mountain Ash in the south. From 1974 to 19 ...

Pontypridd Pontypridd ( , ), Colloquialism, colloquially referred to as ''Ponty'', is a town and a Community (Wales), community in Rhondda Cynon Taf, South Wales, approximately 10 miles north west of Cardiff city centre. Geography Pontypridd comprises the ...

Rhondda Rhondda , or the Rhondda Valley ( ), is a former coalmining area in South Wales, historically in the county of Glamorgan. It takes its name from the River Rhondda, and embraces two valleys – the larger Rhondda Fawr valley (, 'large') and t ...

and

Vale of Glamorgan The Vale of Glamorgan ( ), locally referred to as ''The Vale'', is a Principal areas of Wales, county borough in the South East Wales, south-east of Wales. It borders Bridgend County Borough to the west, Cardiff to the east, Rhondda Cynon Taf t ...

. The use of the

Additional Member System The additional-member system (AMS) is a two-vote seat-linkage-based mixed electoral system used in the United Kingdom in which most legislator, representatives are elected in single-member districts (SMDs), and a fixed number of other "addition ...

means that each voter has two votes. The first vote is for a candidate to become the Member of the Senedd for the voter's constituency, elected under the first past the post system. The second vote is used to vote for a regional

closed party list Closed list describes the variant of party-list systems where voters can effectively vote for only political parties as a whole; thus they have no influence on the party-supplied order in which party candidates are elected. If voters had some in ...

of candidates. Additional member's seats are allocated from the lists by the

d'Hondt method The D'Hondt method, also called the Jefferson method or the greatest divisors method, is an apportionment method for allocating seats in parliaments among federal states, or in proportional representation among political parties. It belongs to ...

, to create a more proportional outcome in both the region and the Senedd.

Assembly members and Members of the Senedd

Elections

Elections in the 2020s

Elections in the 2010s

Regional ballots rejected at the count: 176

Elections in the 2000s

2003 Electorate: 65,505
Regional ballots rejected: 423

Elections in the 1990s

1999 Electorate: 60,996

References

{{DEFAULTSORT:Cardiff South And Penarth (Assembly Constituency) 1999 establishments in Wales Constituencies established in 1999 Constituencies of Cardiff Politics of Penarth Senedd constituencies in the South Wales Central electoral region