The powerful Army, which has ruled Pakistan for more than half of its 73 plus years of existence, has hitherto wielded considerable power in the matters of security and foreign policy.
Last year, Khan received 178 votes when he had decided to seek a vote of confidence after a candidate supported by his party lost the Senate election.
On paper, Khan still enjoys that support, comprising 155 members of his PTI and 23 from coalition partners, including seven from Mutahida Qaumi Movement (MQM), five each from Pakistan Muslim League (PML) and Balochistan Awami Party (BAP), three from Grand Democratic Alliance (GDA), one each from Awami Muslim League (AML) and Jamhoori Watan Party (JWP) and one independent member.