ITV News Wales published constituency-level polling on 24 March 2026 with fieldwork between 9 and 18 March, placing First Minister Eluned Morgan below the entry threshold in Ceredigion Penfro, the mid-Wales seat where she tops the Welsh Labour list. The threshold under the new system sits around 12 per cent of a constituency vote, per the Senedd Research Service, and Morgan's personal standing in the poll fell beneath that line.
The seat matters because Morgan is the sitting First Minister and the lead name on Labour's list. In a closed-list system, the top name on the list is the first to take one of the six constituency seats if the party clears the threshold. A First Minister leading her party below the minimum would, in strict mathematical terms, leave her outside the chamber she currently runs.
No sitting First Minister of Wales has lost their seat under devolution, which began in 1999. The ITV News Wales data is a single poll with a standard error band that could move Morgan either side of the threshold on polling day. Labour collapses from roughly 29 seats to about 12 under the YouGov projection, and the arithmetic consequences land first on the list-topper in every constituency that fails to clear the bar.
