Yashwant Sinha, former Minister of Finance and External Affairs took to Twitter and said that the decision of the President was complete miscarriage of natural justice.
The Election Commission had on Friday recommended to President Kovind that the 20 MLAs were liable for disqualification for holding offices of profit between March 13, 2015, and September 8, 2016.
AAP said it would challenge the decision in court.
The AAP had also approached the Delhi High Court seeking a stay on EC's recommendation. Chief Minister Arvind Kejriwal, reacting a little late, tweeted that his party will continue to tread on the path of truth with the grace of almighty.
He also claimed that MLAs of other parties held offices of profit in states like Punjab, Himachal Pradesh, Jharkhand and Chhattisgarh.
Ashutosh, AAP leader: The President, Sri Ram Nath Kovind should himself contemplate if he has enhanced his stature in history as the President of the Republic of India by signing to disqualify AAP MLAs?
"The Delhi BJP welcomes the decision taken by the President to disqualify the 20 MLAs", Bharatiya Janata Party (BJP) Delhi unit President Manoj Tiwari said. However, 10 of the 17 legislators, who quit as Parliamentary Secretaries following the High Court verdict, have said that there is no ground for their disqualification as MLAs. It is an act of Centre using constitutional institutions.
Delhi Congress president Ajay Maken also said the chief minister had lost the moral right to be in power.
The Election Commission had made a recommendation against the lawmakers.
The application by Patel said 21 AAP MLAs, including Jarnail Singh (Rajouri Garden) who resigned to contest the Punjab Assembly polls a year ago, were appointed Parliamentary Secretaries to ministers in the Delhi government in violation of the Constitution. "We are expecting relief from the court tomorrow", said Madanlal.
Once the vacancies are announced by the Assembly, the AAP's strength would go down to 46 from 66 in the 70-member House.
This disqualification will lead to by-polls in Delhi.