Besides, India's Prime Minister Narendra Modi had also telephoned Imran Khan to congratulate him over his party's victory, saying that India was "ready to enter a new era of relations with Pakistan", according to a PTI statement. A party can only form the government if it manages to clinch 172 seats in total.
However, if the National Assembly session was called on August 12, the election of the Prime Minister would be held on August 15, he added.
Amid efforts to secure a simple majority at the centre, the PTI has initiated formal talks with the leadership of the Balochistan National Party (BNP) and the Jamhoori Watan Party (JWP). In Khyber Pakhtunkhwa province, Mr Khan's party has led the provincial government since 2013.
Sources have said that the party has also chose to induct Muttahida Qaumi Movement-Pakistan (MQM-P) in the federal cabinet.More news: Massive rogue planet found lurking outside our solar system
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So far, the PTI has secured support from Karachi-based MQM, which has demanded two slots in the federal cabinet and some concessions for its jailed workers. However, its leader Chaudhry Pervaiz Elahi would be nominated for Punjab Assembly speaker, the sources said. The PTI will support BAP in getting its chief minister elected in Balochistan.
The Leader of the Opposition in the National Assembly will be from Pakistan Muslim League Nawaz, said a senior party leader Ahsan Iqbal.
But all opposition parties announced that they will field candidates for the office of the prime minister, speaker and deputy speaker in the National Assembly.
PTI and MQM-P signed a nine-point memorandum of understanding (MoU) for the formation of government in the Centre on Friday.