Part of ap Iorwerth’s messaging is aimed at avoiding a controversial situation where Reform emerges as the largest party after the election, but is then prevented from forming the next Welsh government by the Senedd’s left-wing parties.

Former Labour first minister Mark Drakeford said recently that the left-wing parties would team up to block Reform in the event it wins the largest number of seats.

Reform’s Welsh leader Dan Thomas has already warned of a potential post-election “stitch-up” to prevent his party from governing.

Asked about that, ap Iorwerth repeated: “We have to make sure that one party is bigger than Reform, that can only be Plaid Cymru.

“That’s a compelling tactical message, but I want people to make a positive decision to vote Plaid Cymru too.”