Plaid Cymru leader Rhun ap Iorwerth insisted his party has the chance to change Wales at next May's election as he tries to break a century of Labour rule.
Giving his keynote speech at the party's conference in Swansea, he said: "Plaid Cymru is ready to lead.
"To the people of Wales, I say 'come with us'."
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The former BBC journalist admitted it "won't be an easy task", but said voting for his Welsh nationalist party to replace Labour in the Senedd (Welsh parliament) next year would unleash Wales "from its shackles".
Labour has been the largest party in Wales for more than 100 years, giving it the longest-winning streak of any democratically elected political party in the world.
But as its