CBS cut ties with Rose on November 21 after The Washington Post revealed a string of sexual misconduct allegations from women who worked with him over the years. The show has been without a regular third co-anchor since CBS ousted Rose in the wake of allegations of sexual harassment made against him by employees of his production company as well as staffers at CBS News.
Dickerson joined CBS in 2009 as an analyst and contributor and was tapped to serve as the network's political director in 2011.
Dickerson will join Gayle King and Norah O'Donnell on the morning-show panel Wednesday. In 2015, he took over the "Face The Nation" role from legendary newsman Bob Schieffer.
It was announced Tuesday by David Rhodes, president of CBS News.
"This Morning" has the smallest audience of the three main morning shows on US broadcast television with a daily audience of about 3.6 million.
"Few people possess John's intellect, curiosity and journalistic chops", said Ryan Kadro, executive producer of "CBS This Morning". "He's the ideal complement to Gayle and Norah and will help us continue the momentum CBS This Morning has achieved over the last six years".
Rhodes said in his memo that he'll be in Washington later this week to begin the process of finding Dickerson's replacement there.
"Today is our sixth anniversary".
By naming Dickerson, a veteran Beltway journalist who often provides historical analysis in his coverage, CBS News is sending a signal that its morning program will retain its positioning as a hard-news alternative to the other broadcast networks' offerings in that time slot.
Photo John Dickerson has an understated style that belies a shrewdness honed by years of campaign and Washington reporting. Dickerson has logged years covering politics for Slate and Time magazine, and spent almost 20 years in Washington covering the White House, Congress and economics. "Can't think of better way to celebrate and kick off our next chapter", King said.