Khan, the founder of the Pakistan Tehreek-e-Insaf (PTI) party was sentenced to 10 years of imprisonment along with Qureshi in the cipher case in January by Islamabad's special court set up under the Official Secrets Act.

The disqualification of Qureshi, 67, comes five days before the February 8 general elections, which Khan's Pakistan Tehreek-e-Insaf party is contesting despite a state crackdown and without its famous election symbol, the bat.