This episode's headline: 81 Questions; Political Wrap; School Vouchers; Giving Thanks. ANCHOR: JIM LEHRER; GUESTS: REP. ASA HUTCHINSON, [R] Arkansas; REP. JERROLD NADLER, [D] New York; MARK SHIELDS, Syndicated Columnist; PAUL GIGOT, Wall Street Journal; PAUL PETERSON, Harvard University; BRUCE FULLER, University of California, Berkeley ROBERT PINSKY, Poet Laureate; CORRESPONDENTS: MARGARET WARNER; BETTY ANN BOWSER; PHIL PONCE