The 2017 Cardiff Council election was held on 4 May 2017 as part of the national 2017 Welsh local elections. The elections were preceded by the 2012 elections and were followed by the 2022 elections.^[1]

Quick Facts All 75 seats to Cardiff Council 38 seats needed for a majority, First party ...

2017 Cardiff Council election

← 2012 4 May 2017 2022 →
All 75 seats to Cardiff Council 38 seats needed for a majority
First party Second party Third party   Leader Phil Bale David Walker Elizabeth Clark Party Labour Conservative Liberal Democrats Leader's seat Llanishen Lisvane Cathays Seats before 44 7 17 Seats won 40/75 20/74 11/75 Seat change 4 13 6 Popular vote 113,025 72,920 44,823 Percentage 39.5 25.5 15.7 Swing 3.2% 7.6% 0.7%   Fourth party Fifth party   Leader Neil McEvoy Fenella Bowden Party Plaid Cymru Heath & Birchgrove Independents Leader's seat Fairwater Heath Seats before 3 1 Seats won 3/60 1/3 Seat change 0 0 Popular vote 41,243 3,810 (Heath) Percentage 14.8 1.3 Swing 2.0% 0.2%
Map showing the results of the 2017 City of Cardiff Council Elections.
Council control before election Labour Council control after election Labour

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Labour maintained control of the authority following these elections, gaining their highest popular vote since 1995, but ending up with a reduced number of seats. The Conservatives achieved their best result since the unitary council was created in 1995, winning twenty seats and replacing the Liberal Democrats as the official opposition on the council. Plaid Cymru also secured their highest popular vote, despite standing in fewer seats than in 2012, but only won three seats. The Liberal Democrats in Cardiff suffered their worst election result in terms of total seats won (eleven) since 1995, whilst the local Green Party failed to win its first seat on the council, suffering a fall in support when compared to the 2012 election. The only independent candidate to be elected was Fenella Bowden in the Heath ward, who would become Cardiff Council's longest serving Independent councillor during the council term.^[2]

The only member of the original council elected in 1995 who had served continuously since then is Russell Goodway, former leader of the Council, who was again returned for the Ely ward. Others elected in 1995 but who had not remained members continuously included Graham Hinchey, Susan Lent, Sarah Merry, Lynda Thorne (Labour) and Fenella Bowden (LD/Independent).

Leader of the Plaid Cymru group, Neil McEvoy, was the only party leader to remain in post immediately after the election. Leader of the Liberal Democrats, Elizabeth Clark lost her Cathays seat to Labour. Conservative group leader, David Walker, also stood down immediately after the elections.^[3] Council leader and leader of the Labour group prior to the election, Phil Bale, was replaced by Splott councillor Huw Thomas.^[4]

The four largest political groups on Cardiff Council produced manifestos for the 2017 local election campaign. The Heath Independents committed to six pledges ahead of the election.^[6]

The South Wales Echo also interviewed the four largest political group leaders prior to election day.

Cardiff Labour^[7][8][9]
Cardiff Conservatives^[10][11]
Cardiff Liberal Democrats^[12][13][14]
Plaid Cymru^[15][16][17]

* = sitting councillor in this ward prior to election

Neil McEvoy was expelled by Plaid Cymru for 18 months on 19 March 2018,^[34] and then sat under the label "Fairwater Cardiff West".^[35] In February 2020 he formed the Welsh National Party, later to become "Propel"^[36] along with 3 other former Plaid Cymru councillors.^[37] One of those, Ely councillor Andrea Gibson, later left the party and sat as an Independent.

An Electoral Review undertaken by the Local Democracy and Boundary Commission for Wales recommended an increase to the total number of council seats in Cardiff from 75 to 79 ahead of the next election.^[38][39] The changes were accepted with only slight modification, to take effect from the 2022 council election.^[40]