On last night’s Countdown, Keith Olbermann ran a segment attempting to debunk the story that the White House had threatened Senator Ben Nelson (D-Nebraska) with the closure of Offut Air Force Base in order to secure his vote on healthcare reform. The White House and Ben Nelson categorically deny the charge. Who’s right, and who’s wrong? Plus, Mediaite has exclusive reaction from Lewis and Goldfarb:

On Monday night’s “Countdown,” Keith Olbermann granted the Worst Persons gold to a quartet of conservative figures for jumping the gun when tweeting about White House visitors on Friday. Mediaite has exclusive reactions from three of them: Amanda Carpenter, Mary Katherine Ham, and Ed Morrissey. Why? Mostly because we can.