LOST - "The Candidate" - Jack must decide whether or not to trust Locke after he is asked to follow through on a difficult task, on "Lost," TUESDAY, MAY 4 (9:00-10:02 p.m., ET) on the ABC Television Network. (ABC/MARIO PEREZ) TERRY O'QUINN, NAVEEN ANDREWS, EMILIE DE RAVIN, JOSH HOLLOWAY