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Plaid was formed in 1925 and won its first seat in the UK Parliament in 1966. The party holds 4 of 32 Welsh seats in the UK Parliament, 12 of 60 seats in the Senedd,[34] and 202 of 1,231 principal local authority councillors.[30] It is a member of the European Free Alliance (EFA).
^"Plaid Cymru". Politics.co.uk. Retrieved 26 December 2022.
^ abSchrijver, Frans (2006). Regionalism After Regionalisation: Spain, France and the United Kingdom (Thesis). Amsterdam University Press. p. 330. hdl:11245/1.288031. ISBN978-90-5629-428-1.
^Siaroff, Alan (2000). Comparative European Party Systems: An Analysis of Parliamentary Elections Since 1945. Garland. p. 467. ISBN978-1-138-88809-8.
^ abElias, Anwen (2006). "From 'full national status' to 'independence' in Europe: The case of Plaid Cymru — the Party of Wales". European Integration and the Nationalities Question. Routledge. p. 194.
^Dunphy, Richard (2004). Contesting capitalism?: Left parties and European integration. Manchester University Press. p. 157. ISBN0-7190-6803-7.
^McEwen, Nicola; Parry, Richard (2005). "Devolution and the preservation of the United Kingdom welfare state". The Territorial Politics of Welfare. Routledge. p. 53.