The Election Commission (EC) has fixed March 20 for voting in Tangail-4 by-election.Assistant Secretary of EC Razib Ahsan on Sunday confirmed the matter to Jagonews24.com.The parliamentary seat was vacated by former Awami League minister Abdul Latif Siddique following expulsion from the ruling party over his controversial remarks about Muslims practice of hajj pilgrimage.Earlier, Supreme Court (SC) postponed for two weeks following a plea of Kader Siddiqui who sought stay of a High Court (HC) order that turned down his appeal against the cancellation of his candidacy in Tangail-4 by-election.