Three other Senedd parties indicate they will either back his nomination or not oppose him.
Rhun ap Iorwerth to become Wales' new first minister within days
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Story Timeline
Sun 10:58 - BBC Politics
Plaid Cymru's Rhun ap Iorwerth hopes to be first minister on Tuesday
Mon 13:56 - BBC Politics
Rhun ap Iorwerth to become Wales' new first minister within days