CNN  — 

Age had been President Joe Biden’s biggest political weakness ever since he launched his first campaign against former President Donald Trump five years ago. But his faltering debate performance on June 27 shocked many Americans in what was their most extensive exposure to the president since the last round of debates in 2020.

Here are the key events that have shaped one of the most crucial months in Biden’s career — and would eventually sunset his half-century life in politics:

View this interactive content on CNN.com

CNN’s Marco Chacon and Amanda Steen contributed to this report.