Plaid Cymru won the by-election in Caerphilly, with Lindsay Whittle receiving 47.4% of the vote.
Reform's Llŷr Powell came in second with 36%, while Labour's vote collapsed to 11%.
UKIP had a poor showing, with a "comically low" number of votes, finishing last.
Someone had to finish last – and UKIP ended up with the wooden spoon.
The turnout was 50%, with Reform having narrowly led polling before the election.
Author's summary: Plaid Cymru wins Caerphilly by-election with 47.4% of the vote.