Tweet Facebook Mail President Joe Biden delivered his valedictory address to the Democratic National Convention on Monday night, as his decision to end his reelection bid released newfound energy within his party with Vice President Kamala Harris' elevation to the top of the ticket. After 52 years rising to the pinnacle of influence within his party, Biden, 81, received a hero’s welcome for the act of stepping aside for Harris, weeks after many in his party were pressuring him to drop his bid for reelection. One month after an unprecedented mid-campaign switch, the opening night of the convention in Chicago was designed to give a graceful exit to the incumbent president and slingshot Harris toward a faceoff with Republican Donald Trump, whose comeback bid for the White House is viewed by Democrats as an existential threat.

READ MORE: Matthew Perry's bleak last words revealed Democratic presidential nominee Vice President Kamala Harris, left, clasps her hand in the air with President Joe Biden at the Democratic National Convention. (AP) A visibly emotional Biden was greeted by a more than four-minute-long ovation and chants of “Thank you Joe.” “America, I love you,” he replied.

Speaking clearly and energetically, Biden appeared to relish the chance to defend his record, advocate for his vice president and go on the attack against Trump. READ MORE: 'Tech king' missing after luxury superyacht sinks in freak storm President Joe Biden speaks during the Democratic Nationa.