Qadri denies those allegations and maintains he is simply seeking to ensure a corruption-free electoral process.
The current government and opposition have both rejected his requests for a caretaker administration, insisting that nothing will stand in the way of timely elections and the democratic process.
"We will not succumb to these illegal demands," Malik said last week.
Party withdraws support
The only political party that had supported Qadri's demonstration, the Mutahida Qaumi Movement, withdrew that support last week. The movement is a coalition partner in the current government.
If this year's elections take place without major difficulties, it would represent the first time in Pakistan's history that a civilian government would have made it through a five-year term.
Corruption is widely considered a chronic problem in Pakistan's political system; President Zardari has served prison time on corruption charges.
The problem appears to be regional. Qadri's campaign comes more than a year after anti-corruption demonstrator Anna Hazare roiled Indian politics with a hunger strike that called for the introduction of strong anti-graft measures.