Pakistan Muslim League-Nawaz (PML-N) candidate Chaudhry Nawaz and PTI-backed Sunni Ittehad Council (SIC) candidate Moonis Elahi were contesting against each other in by-polls from PP-158.
According to details, the strict security arrangements were made on Sunday on the occasion of the polling underway in the constituency.
Meanwhile, at some polling stations, a large number of presence of voters is being reported, while some paint a deserted look.
In March, an appellate tribunal of the Lahore High Court (LHC) allowed Moonis Elahi to contest the by-election.
The tribunal accepted the nomination papers of Moonis and set aside the decision of the Returning Officer (RO), who had rejected the nomination papers of the former federal minister.
