“GAME CHANGE” the  NYT #1 Bestseller at BMS. On Thursday, February 18, DL21C  (www.dl21c.org ) produced a book signing event and informal discussion with the authors, Mark Halperin, of Time Magazine and John Heilemann, of New York Magazine. The evening was moderated by the NYTimes’s Jodi Kantor reporter who covered the Obama campaign for two...