1966 General Election - Elections contested by Plaid Cymru

There are 20 elections.

1. Aberdare
2. Anglesey
3. Brecon and Radnor
4. Caernarvon
5. Caerphilly
6. Cardigan
7. Carmarthen
8. Conway
9. Denbigh
10. East Flintshire
11. Llanelly
12. Merioneth
13. Merthyr Tydfil
14. Montgomery
15. Pembrokeshire
16. Rhondda East
17. Rhondda West
18. Swansea East
19. West Flintshire
20. Wrexham