US President Joe Biden today released the pressure that had been piling on him and announced he would quit his pursuit for a second term.
It followed the mounting concerns from within his own Democrat party about his age and ability to win over Republican candidate Donald Trump after a poor debate performance last month.
With four months to go until the election, the race for the White House is now in a state of flux.
Shortly after making his statement this morning, President Biden endorsed his Vice President Kamala Harris for the Democrat nomination.
But will the party agree?
Kathryn is joined by BBC US State Department correspondent Tom Bateman.