Could Biden's decision save his legacy - and the election?published at 20:26 British Summer Time 21 July
Nomia Iqbal
North America correspondent
This decision is seismic - and could possibly save President Biden’s legacy.
It is too early to know for certain, but there is a chance it will be seen by many as an act of strength.
Will it re-energise voters, especially those who are anti-Trump, and those who will admire Biden for making such a gut-wrenching decision?
Time will tell, but don't forget - the anti-Trump bloc still remain the largest coalition in US politics.