LONDON — In less than two years, Britain's governing Labour Party has gone from a landslide election victory to a historic rout at last week's local and regional votes that has put Prime Minister Keir Starmer's job on the line.

British Prime Minister Keir Starmer's job hung in the balance Sunday as calls mounted for his resignation following disastrous election results.

After the Labour Party's disastrous showing in the May 7 local elections, the days of the British prime minister at Downing Street appear to be numbered.