The Assembly is composed of 40 Assembly Members elected for single-member constituencies on a First Past the Post basis, the constituencies being equivalent to those used for the United Kingdom Parliament, and 20 AMs elected on regional lists which are intended to result in the Assembly more accurately reflecting the distribution of votes cast between the parties at the election.

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Members as from May 2003:

Constituency Members

Aberavon - Brian Gibbons[?] (Lab)

Alyn & Deeside - Carl Sargeant[?] (Lab)

Blaenau Gwent - Peter Law[?] (Lab)

Brecon & Radnor - Kirsty Williams[?] (Lib Dem)

Bridgend - Carwyn Jones[?] (Lab)

Caernarfon - Alun Ffred Jones[?] (Plaid)

Caerphilly - Jeffrey Cuthbert[?] (Lab)

Cardiff Central - Jenny Randerson[?] (Lib Dem)

Cardiff North - Sue Essex[?] (Lab)

Cardiff South & Penarth - Lorraine Barrett[?] (Lab)

Cardiff West - Rt. Hon Rhodri Morgan (Lab)

Carmarthen East & Dinefwr - Rhodri Glyn Thomas[?] (Plaid)

Carmarthen West & South Pembrokeshire - Christine Gwyther[?] (Lab)

Ceredigion - Elin Jones[?] (Plaid)

Clwyd South - Karen Sinclair[?] (Lab)

Clwyd West - Alun Pugh[?] (Lab)

Conwy - Denise Idris-Jones[?] (Lab)

Cynon Valley - Christine Chapman[?] (Lab)

Delyn - Sandy Mewies[?] (Lab)

Gower Edwina Hart[?] (Lab)

Islwyn - Irene James[?] (Lab)

Llanelli - Catherine Thomas[?] (Lab)

Meirionnydd Nant Conwy - Dafydd Elis Thomas[?] (Plaid)

Merthyr Tydfil & Rhymney - Huw Lewis[?] (Lab)

Monmouth - David Davies[?] (Con)

Montgomeryshire - Mick Bates[?] (Lib Dem)

Neath - Gwenda Thomas (Lab)

Newport East - John Griffiths[?] (Lab)

Newport West - Rosemary Butler[?] (Lab)

Ogmore - Janice Gregory[?] (Lab)

Pontypridd - Jane Davidson[?] (Lab)

Preseli Pembrokeshire - Tamsin Dunwoody-Kneafsey (Lab)

Rhondda - Leighton Andrews[?] (Lab)

Swansea East- Val Lloyd[?] (Lab)

Swansea West - Andrew Davies (Lab)

Torfaen - Lynne Neagle[?] (Lab)

Vale of Clwyd - Ann Jones[?] (Lab)

Vale of Glamorgan - Jane Hutt[?] (Lab)

Wrexham - John Marek (John Marek Independent Party)

Ynys Môn - Ieuan Wyn Jones[?] (Plaid)

Regional Members

Mid and West Wales

Nicholas Bourne[?] (Con)

Glyn Davies[?] (Con)

Lisa Francis[?] (Con)

Helen Mary Jones[?] (Plaid)

North Wales

Janet Ryder[?] (Plaid)

Mark Isherwood[?] (Con)

Brynle Williams[?] (Con)

Eleanor Burnham[?] (Lib Dem)

South Wales Central

Jonathan Morgan[?] (Con)

Leanne Wood[?] (Plaid)

Owen John Thomas[?] (Plaid)

David Melding[?] (Con)

South Wales East

Michael German[?] (Lib Dem)

Jocelyn Davies[?] (Plaid)

William Graham[?] (Con)

Laura Anne Jones[?] (Con)

South Wales West

Janet Davies[?] (Plaid)

Dai Lloyd[?] (Plaid)

Alun Cairns[?] (Con)

Peter Black[?] (Lib Dem)