Plaid Cymru leader Rhun ap Iorwerth joins Senedd Sources to discuss his party’s stunning by-election win in Caerphilly, what it means for the 2026 Senedd election, and how Plaid plans to challenge both Labour’s dominance in Cardiff Bay and the rise of Reform UK. Rhun speaks candidly about populism, independence, cooperation in Welsh politics, and why he’s ready to lead Wales as First Minister.

In this in-depth interview with Ollie Cole, Jo Kiernan, and Craig Lawton, Rhun explains:

• Why Plaid Cymru’s Caerphilly win signals a “fundamental shift” in Welsh politics
• His view on British vs Welsh nationalism and what sets Plaid apart
• Whether Labour’s disillusionment under Keir Starmer gives Plaid a path to power
• His plans for childcare reform, tackling child poverty, and preparing for government
• The realistic timeline for Welsh independence — and why he’s “not putting anything on the back burner”

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