Joe Biden (left) and Donald Trump (right) against a red and blue background.
A rematch is on between US President Joe Biden and his predecessor Donald Trump.
  • Joe Biden and Donald Trump on Tuesday became their parties' presumptive 2024 presidential nominees.
  • Neither of them faced significant competition in the primaries.
  • Polling suggests many US voters have long dreaded the head-to-head.

President Joe Biden and his predecessor Donald Trump have clinched their parties' nominations for the 2024 presidential election — a rematch that long seemed both inevitable and largely disfavored by voters.