The Observer considers the future of NBC reporter David Gregory, since "lame-duck presidents create lame-duck White House correspondents." Gregory's place at post-Russert NBC News seems unclear, since numbers for his MSNBC show, The Road to the White House, have been flat month to month. And the show's lack of buzz, relative to Countdown with Keith Olbermann and Hardball with Chris Matthews, could be one reason, as the lack of newsmaking guests. The New Yorker's Ken......