Gayle King will be joined by Anthony Mason and Tony Dokoupil as co-hosts of "CBS This Morning," and Norah O'Donnell has been named anchor and managing editor of "CBS Evening News," CBS News announced Monday morning. O'Donnell will also be the lead anchor of political events for the network and continue as a contributing correspondent for "60 Minutes."

John Dickerson, currently a co-host in the morning, will shift roles to report for "60 Minutes" and contribute to election specials.

The staffing moves were announced by Susan Zirinsky, who was named president of CBS News in January and took over in March.

"This is a start of a new era for CBS News," said Zirinsky. "Our job is to reveal America to itself through original reporting, strong investigative journalism and powerful political coverage."