A signature drive will be launched on Monday next week to pressure Prime Minister Najib Abdul Razak to resign.

Pakatan Harapan chief secretary Saifuddin Abdullah said this will be held in conjunction with the "Save Malaysia Consensus" rally in Ampang, also on March 28.

"We will gather signatures, count them, and show the world how many people would sign the People's Declaration to pressure Najib to resign.

“We understand that Najib is highly influential in his party, but I understand Umno's psychology better. They are pragmatic.

“If they see so many people oppose the prime minister, they (Umno members) will realise that their president is a liability to the party. Thus Umno members will switch sides. That is Umno's psychology,” he told reporters.

Saifuddin ( photo ) was met by reporters while distributing leaflets promoting the rally at Masjid Jamek, Kuala Lumpur, after Friday prayers today.

Also present were Amanah adviser Ahmad Awang and PKR Youth strategy director Akmal Nasir.

Leaflets promoting the "Abolish GST Rally" to be held on April 2 were being distributed too.

Saifuddin, who is a former Umno supreme council member, said he hopes Malaysians will come in droves to both the March 28 and April 2 events to ensure that Najib resigns soon.

“Our goal is only one which is to pressure the prime minister to step down immediately and implement comprehensive and continuous reforms,” he said.

Meanwhile, student Mohd Fikri Najib, 25, said he will be attending the anti-GST rally.

He said this is to express his opposition to the goods and services tax scheme introduced last year.

“I will be there because I feel that as Malaysians, we have freedom of expression. Moreover, the economic conditions are uncertain, the cost of living is high, and now the daily necessities are subject to GST,” he said.

Another trader who identified himself as Ahmad Azizi said he would support the rallies.

“I support. I hope the government will hear what the people have to say,” he said.