Biden and Trump set stage for gruelling US election rematch

The wins effectively seal a rematch between Joe Biden and Donald Trump in 2024 (AP)

US President Joe Biden and his White House predecessor Donald Trump have clinched their parties’ presidential nominations with decisive victories in several primaries, setting up a general election rematch that many American voters do not want.

The outcome of contests across Georgia, Mississippi and Washington state was never in doubt. Neither Mr Biden, a Democrat, nor Mr Trump, a Republican, faced major opposition.