27. (1) For the trial of election petitions, the Election Commission shall, by notification in the official Gazette, appoint a judicial officer to be an Election Tribunal for such area as may be specified in the notification. (2) Where the person constituting an Election Tribunal is succeeded by another, the trial of a petition shall continue before the person so succeeding and any evidence already recorded shall remain upon the record and it shall not be necessary to re examine the witnesses who have already been examined and discharged.