Imran Khan's Pakistan Tehreek-i-Insaf (PTI) party is leading in 114 of 272 contested National Assembly constituencies. Nawaz Sharif's Pakistan Muslim League-Nawaz (PML-N) was ahead in 64 constituencies, and the Pakistan Peoples Party (PPP), led by the son of assassinated two-time prime minister Benazir Bhutto, led in 42 constituencies.