You have to go back more than 100 years, to before 1922, for an election where Labour was not dominating Welsh politics.
Rooted in the industrial heritage of the country which was once the home of the UK's first Labour MP, Keir Hardie, the party has beat all others in Wales in every major Westminster election ever since.
Labour has always been the largest party in Cardiff Bay too, and has won every election for the Welsh Parliament.
But for the first time, the outlook for Welsh Labour at the next Senedd election on May 7 2026 is much less clear.
Led by Eluned Morgan, it faces a fight to hold on to the reins of the Welsh government, and the sway it has held over Welsh politics.