By ZEKE MILLER, JONATHAN J. COOPER, AAMER MADHANI and DARLENE SUPERVILLE CHICAGO (AP) — President Joe Biden delivered his valedictory address to the Democratic National Convention on Monday night, saying, “I gave my best to you” and basking in a long ovation that reflected the energy released by his decision to cede the stage to Vice President Kamala Harris. Biden, 81, received a hero’s welcome weeks after many in his party were pressuring him to drop his bid for reelection.