Pakistan Tehreek-e-Insaf chief Khan was leading in Peshawar, Lahore, Rawalpindi, and Mianwali as initial results started pouring in after counting of votes began this evening.
PML-N president Nawaz Sharif is leading in Sargodha, while his brother Shahbaz Sharif was ahead of his rivals, Geo TV reported.
According to trends, PTI and PML-N were running neck-to- neck in most populous Punjab province, which has more than half of the 272 parliamentary seats.
Pakistan People's Party (PPP) candidate Faisal Karim Kundi was leading in Dera Ismael Khan.