One could argue that Plaid Cymru is the voice of Wales, a nationalist party, seeking independence from the UK, but in reality it is a National Socialist Party, and represents very few people actually- see below!
2017 election results –
Labour polled 771,000 votes
Plaid polled 164,000 votes
Tories polled 528,000 votes
Frankly, , few care what they say!