Ikramullah Khan Gandapur scored 28,073 votes while his competitor Fateh Ullah Mian Khel (Independent) scored 14,983 votes.
The seat fell vacant following a suicide attack on former provincial law minister Israrullah Gandapur in November. The voting started at 8AM and ended at 5PM on Sunday.
At least 91 polling stations were setup for 108,899 registered voters in the constituency.
Heavy contingent of police and FC were deployed during the polling to maintain law and order situation.
Before the scheduled time for voting, unknown assailants attacked Gira Guldad polling station. The attack was followed by firing that injured two policemen early morning.
The administration tightened the security in the area and kicked off polling for by-election in the area. While two police personnel were injured during a grenade attack on Kulachi polling station. Army was also put on high alert to avoid any untoward situation.
Meanwhile in D.I Khan’s Kari Shamozia area, women voters were reportedly barred from casting their votes, police said.
They said local candidates in the area mutually decided not to allow women voters cast their votes at a particular polling station.