Llanelli AM, Keith Davies, has told Assembly Members that he is sorry for his actions following his censure.
He was criticised after he admitted getting drunk on a night out in Cardiff and then returning to his hotel with a woman he had met so that they could drink some more.
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The Plaid leader urged voters to give her party a mandate, so that she can give Wales a voice in Parliament as the SNP has for Scotland.
90,000 people are expected to attend the youth festival, which runs from the 29th May to the 3rd June.
Heavy, thundery showers will clear northwards through the morning, allowing it to turn mostly dry and bright for many.