Pakistan's parliament was set to meet on Monday to elect a new prime minister, with opposition leader Shehbaz Sharif the favourite to win after a week-long constitutional crisis that climaxed on Sunday when Imran Khan lost a no-confidence vote.
Khan's Pakistan Tehreek-e-Insaf (PTI) party has submitted papers nominating former foreign minister Shah Mahmood Qureshi as its candidate for prime minister.
If Qureshi loses, PTI has said its members of parliament would resign en masse, potentially creating the need for urgent by-elections for their seats.
Parliament's lower house will convene for a session to decide the new prime minister at around 2 p.m. (09:00 GMT).
No elected prime minister has completed a full term in the nuclear-armed nation since it won independence from colonial power Great Britain in 1947, though Khan is the first to be removed by a no-confidence vote.
Khan remained defiant following his defeat in parliament.
