Chicago Mayor Richard M. Daley, who has presided over the third-largest U.S. burghal for 21 years, like his ancestor did afore him, appear Tuesday that he will not run for a seventh term, adage the time "just feels right."Daley, 68, said he'd been cerebration about not active for several months and became adequate with his accommodation over the aftermost several weeks.It aloof feels right," Daley said at a account conference, his animated wife Maggie continuing by his side. "I've consistently believed that every person, abnormally accessible officials, charge accept back it's time to move on. For me, that time is now.He alleged the advertisement "a claimed decision, no more, no less" and said he and his ancestors now activate a "new appearance of our lives."The advertisement was fabricated with little warning, but was not a abruptness to everyone.It's a abruptness because there's been a Daley in the political arrangement for so long," said Alan Gitelson, a Loyola University of Chicago political science professor.There's consistently been this presence. It's been absolutely allotment and bindle of the character of the burghal to accept a Daley in the mayor's office.