This episode's headline: Bloody Attack; How it Played; Campaign Snapshots; Shields & Brooks. ANCHOR: JIM LEHRER; GUESTS: PAUL QUINN-JUDGE; YOAV KARNY; GLEN HOWARDS; MARK SHIELDS; DAVID BROOKS; CORRESPONDENTS: KWAME HOLMAN; RAY SUAREZ; SPENCER MICHELS; MARGARET WARNER; GWEN IFILL; TERENCE SMITH; KWAME HOLMAN