As the Scottish nationalists stumble, a by-election near Glasgow this fall will test support for the opposition Labour party ahead of Britain’s coming general election.
The former British prime minister, who left Downing Street widely unpopular, is back in favor with his party, Labour, which hopes his political skills can be an advantage as an election nears.
British conservatives kept a seat in a recent election by opposing an ultralow emissions zone, and some are now questioning ambitious emissions-reduction targets.