So far, by my count, at least ten mainstream media journalists have revolved into positions toiling for the Obama campaign, transition or administration. And that doesn't count CNN's Sanjay Gupta, whom the administration courted for Surgeon General; nor long-time NBC News anchor and reporter Jane Pauley who campaigned for Obama last fall in her native Indiana.
[This item, by the MRC's Brent Baker, was posted late Tuesday night on the MRC's blog, NewsBusters.org: newsbusters.org  ]
In a Tuesday "Federal Eye" blog post spurred by Johnson's job change, "The Ex-Journalists Now Working for Obama," the Washington Post's Ed O'Keefe provided a list "of the reporters who've traded notebooks and recorders for policy and podiums," including:
# Rick Weiss: Former Washington Post science reporter left for the Center for American Progress and now serves as communications director and senior policy strategist for the White House Office of Science and Technology.
# Beverley Lumpkin: A former Justice Department reporter/producer for ABC and CBS, she left journalism, worked for the Project on Government Oversight and joined DOJ last month as press secretary, turning sources into colleagues.
The May 5 post: voices.washingtonpost.com 
A "public affairs specialist" at DOJ, Lumpkin worked for ABC News, mostly on the radio but with some television time (screen shot, to be added in the posted version of this CyberAlert, is from the December 1, 1999 World News Now), until sliding over to CBS News as its Justice Department producer through 2006.
Calderone passed along how Johnson, who, while not producing political news stories, appeared on CNN on many Saturday mornings (see screen shot from March), will begin her new job on May 19, "according to an e-mail she sent to friends and colleagues. 'After 10 1/2 years at CNN, which included three presidential campaigns, I am ready for a new challenge and ready to fulfill another career goal - the opportunity to work in public policy,' Johnson wrote." See: www.politico.com 
Preceding Johnson in going from CNN into the Obama orbit (is that much of an adjustment?): international/Middle East correspondent Aneesh Raman and producer Kate Albright-Hanna, who was so eager to put her skills to work for Obama that while still working for CNN she pitched to the campaign "a proposal on video strategy," the Washington Post reported.
September 25 CyberAlert post on Raman's move: www.mrc.org 
Hanna ran the new media operation, meaning online video production and distribution, for the Obama campaign. She then served as "content lead" for the Obama transition Web site (also don't know what she's up to now). The August 21 CyberAlert item, "CNN Producer Pitched 'Video Strategy' to Obama Campaign, Got Job," recounted:
Kate Albright-Hanna, who runs the Obama campaign's online video operations, got the job after she pitched the campaign "a proposal on video strategy" - while she was still a CNN producer. A Wednesday Washington Post "Style" section feature on the key members of the "Triple O: Obama's online operation," recounted the how and when of her pitch to Joe Rospars, a Howard Dean campaign veteran in charge of the so-called Triple O:
"An Emmy winner, she joined CNN's political unit in 1999 and met Rospars while filming a documentary on Dean. When she heard that Rospars was working for Obama, Albright-Hanna called and said she wanted to produce a doc on Obama. The campaign planned to develop its own video content, Rospars said. Intrigued, Albright-Hanna sent him a proposal on video strategy. Weeks later, she left CNN and moved with her husband and 3-year-old son to Chicago."
Before CNN, she was an intern in the Clinton White House and, in a Dateline NBC story days after the Monica Lewinsky story broke, she was featured by reporter Dawn Fratangelo as one of a group of former interns who "simply don't find it plausible the President of the United States could have an affair with an intern." In a soundbite (see slightly snowy screen shot from the MRC's archive), Albright-Hanna asserted: "I can't imagine how that would happen."
Fore more: www.mrc.org 
More journalists who have spun through the Revolving Door from the news media to Obama's team (or to work for John Kerry, so not in my list of ten):
# A February 17 NewsBusters item by Tim Graham, "Liberal Newspaper Reporters Revolve Into Jobs With Kerry, Obama," relayed:
Shepard is the second newspaper reporter to accept a job with the 2004 Democratic presidential nominee in recent months. Former Los Angeles Times and New York Times reporter Douglas Frantz is now chief investigator on Kerry's staff at the Senate Foreign Relations Committee.
See: newsbusters.org 
# Jake Tapper added two other names in a February 16 "Political Punch" post: "Former Los Angeles Times reporter Peter Gosselin who is now a speechwriter for Treasury Secretary Tim Geithner, and former Washington Post deputy editor [of the Outlook section] Warren Bass who is an adviser to United Nations Ambassador Dr. Susan Rice."
Tapper's post: blogs.abcnews.com 
# "Time Magazine's Jay Carney Joins VP Joe Biden's Staff," a December 16 MRC CyberAlert item recounted:
For that December CyberAlert item: www.mrc.org 
Much more on her career and slanted reporting in the May 22, 2008 CyberAlert: www.mrc.org