The Ticker (p.m. edition): MSNBC, FNC, Bloomberg…

> Former White House press secretary Scott McClellan is back on Countdown with Keith Olbermann tonight at 8pmET on MSNBC. He will give his reaction to his treatment by the media, among other topics.

> Sen. John McCain‘s first one-on-one interview since the presidential race officially became McCain v. Obama occurred today. FNC’s Carl Cameron conducted the interview, part of which aired at 5pmET.

> And McCain will be live on Bloomberg TV tomorrow (first live interview since Saturday?) at 2:30pmET. McCain will talk about his overall economic plan with anchor Peter Cook, among other topics.

Launch a social media campaign that will build your brand and deliver results in our online Social Media Marketing Boot Camp starting June 7. Speakers include Abigail Cusick (Bravo Digital), Gregory Galant (Sawhorse Media), Alex Leo (Thomson Reuters Digital), Jim Tobin (Ignite Social Media), and many more. Read the reviews.