Chuck Todd Taking Over NBC's Meet the Press

Embattled Meet the Press moderator David Gregory is leaving NBC News and Chuck Todd will replace him on the venerable Sunday morning public affairs program, NBC said Thursday.

Todd begins his new role on Sept. 7. He remains as NBC News’ political director, but will relinquish his duties as Chief White House correspondent and anchor of MSNBC’s The Daily Rundown. He has been a frequent guest on Meet the Press as a political analyst.

Luke Russert: 'I'm Not Trying to Be My Father'

Like father, like son.

Luke Russert – son of Meet the Press’s Tim Russert, who died tragically this summer – has signed on to help cover the Republican and Democratic national conventions later this year. He’ll report on youth issues for his dad’s network, NBC.

“I’m not trying to be my father,” Luke told the Associated Press. “He’s irreplaceable.”

Tim Russert's Widow: 'We're Doing Great'

Maureen Orth, widow of Tim Russert, said on Monday’s Today show, “we’re doing great” – and credited the “outpouring of love” from both NBC and the public at large for getting her and son Luke through this period of mourning.

Tim Russert's Wife Opens Up About His Death

Leaving their hotel room in Italy ahead of his wife and son to go back to Washington, D.C., so he could tape that Sunday’s Meet the Press, Tim Russert was grabbed by his wife, PEOPLE reports in its latest issue, on sale Friday.

“I said to him, ‘I want to give you a hug; maybe I’ll never see you again,’ ” says journalist Maureen Orth, 65, speaking publicly about her husband for the first time since his June 13 passing – the day after he left Italy. “I don’t know why I said that to him. I just had a feeling.”

Luke Russert Delivers His 'Dad's Last Speech'

A composed, 22-year-old Luke Russert delivered what he termed “my Dad’s last speech” at funeral services in Washington, D.C., Wednesday for powerhouse journalist Tim Russert. The elder Russert, longtime host of NBC’s Meet the Press, died Friday of a heart attack at age 58.

“My dad was my best friend,” said the younger Russert, who acknowledged wondering if he were capable of speaking at the service. “Well dad, I am the man for this job.”

Inside Tim Russert's Last Vacation

Tim Russert’s sudden death came as a shock to friends worldwide – none more than Cardinal John Patrick Foley, who spent time with him during the 58-year-old newsman’s recent Italian vacation.

“He was in good form and happy to be spending time with his wife and son,” the Cardinal (who met up with the Russert clan in Rome) tells PEOPLE. The Meet the Press host and his wife, Vanity Fair journalist Maureen Orth, were celebrating son Luke’s recent graduation from Boston College.

Funeral Services Planned for Tim Russert

Private and public services – including a televised memorial – are planned for Meet the Press moderator Tim Russert.

A public viewing will be held for Russert on Tuesday at the St. Albans School, Cafritz Refectory, in Washington, D.C., according to NBC.

After a private funeral and burial Wednesday, another memorial service will be held for Russert in the Concert Hall of the Kennedy Center. That memorial will be broadcast live Wednesday on MSNBC, beginning at 4 p.m.

Luke Russert Recalls Father Tim

The person described as the “light of Tim Russert’s life,” his son Luke, said he and his mother are “hanging’ in there, [we] take it day by day” after the shocking, sudden death of his father, NBC newsman Tim Russert, on Friday. “We’re holding up as best as can be.”

Tim Russert: The Father's Day That Wasn't

The plans were set. Sunday morning, Father’s Day, Tim Russert would finish taping his NBC show Meet the Press and fly from Washington, D.C., to his hometown of Buffalo, N.Y.

His sister Kathy Russert-Hughes, 52, would pick Tim up and the pair would spend the day with their dad, Timothy J. Russert, Sr., fondly known as Big Russ. “We were going to take him out to eat, drive around, whatever he wanted to do,” Kathy tells PEOPLE. “We were going to spend the time with my dad.”

VIDEO: Tim Russert Remembered

Behind the desk at Meet The Press, Tim Russert had a knack for shredding even the savviest of politicians. Whether stumping gubernatorial candidate David Duke with a basic economic question in 1991, grilling President Bush on non-existent weapons of mass destruction 11 months after the invasion of Iraq, or tripping up Presidential hopeful Mitt Romney on gun control last year, Russert earned his reputation as a TV tough guy.

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