NEW DELHI: By-election to the Amritsar Lok Sabha vacated by Congress Punjab president Capt Amarinder Singh will be held on February 4, along with the assembly polls in the state. The by-poll was necessitated after Amarinder announced his resignation in protest of the "injustice" meted out to the people of Punjab following the November 10 Supreme Court verdict on the Sutlej-Yamuna Link canal water sharing agreement, which he and other state Congress leaders have been vehemently opposing. A statement released by the Commission said the notification for the by-poll will be issued on January 11 and, January 18 will be the last date of filing nominations. Counting will be held on March 11.