The current and former US presidents, Joe Biden and Donald Trump, achieved decisive victories on Super Tuesday. But their successes mask problems that could significantly impact the race for the White House.
Concerns related to Biden's age and anger over his handling of the war between Israel and Hamas were reflected in the celebrations of the major victories he achieved. Trump faces doubts about his ability to unite the ranks of a party that is fragmented to an extent unparalleled in modern history. Third-party and independent candidates have emerged as a potentially decisive factor.