May 10 (UPI) -- British Prime Minister Keir Starmer's job was hanging in the balance Sunday in the aftermath of the worst local council election results for his Labor Party in its long history, analysts said. Political rivals were circling around the prime minister after the ruling party's support on councils in England and in devolved Parliaments in Scotland and Wales collapsed in Thursday's voting, leave the right-wing Reform UK and left-wing Green Party as the biggest electoral winners. In