(Photo Credit: MS NOW) MS NOW is ready to party. The recently-rechristened left-leaning cable channel is set to host its splashy inaugural bash following the White House Correspondents Dinner on Saturday night — and Mediaite has a sneak peek. MS NOW has dubbed the much-anticipated party “Democracy After Hours — The Underground After Party.” And as the name suggests, democracy — and the role journalism plays in maintaining it — is being emphasize…