Game Changer Mark Halperin Joins MSNBC

Mark Halperin is coming on at MSNBC as the network’s senior political analyst, Mike Allen reports. Mr. Halperin will continue in his role as editor-at-large and politics man for Time magazine, where he’s worked since 2007. In March, Mr. Halperin split a $5.3 million advance (gigantic for 2010) with his Game Change co-author, John Heilemann, to work on another book. Busy man!

Mr. Halperin is the network’s second politics pickup in two days. On Monday evening, Keith Olbermann introduced Dave Weigel as an “MSNBC contributor.”