A vote will be taken on the bill after two days of debate and a two-third majority of lawmakers is needed for it to get adopted.
Justice Minister Wijedasa Rajapaksa said the amendment, which is an expectation of the people of this country, will get adopted by a two-third majority of the vote on Tuesday.
He said the main political parties United National Party (UNP), the Sri Lanka Freedom Party (SLAF) as well as the Marxist party Janatha Vimukthi Peramuna (JVP) and Jathika Hela Urumaya (JHU) have expressed support for the bill.
Meanwhile, the President presented copies of the draft bill to the Chief Prelate of Malwatte Chapter Most Venerable Tibbotuwawe Sri Sumangala Thera and the Anunayake of the Asgiriya Chapter Venerable Galagama Sri Attadassi Thera.
The 19th Amendment will remove certain powers of the executive presidency and establish the independent commissions as pledged by the President in his election manifesto.
The Jathika Hela Urumaya (JHU) which earlier opposed the 19th Amendment to the Constitution had decided to extend full support for the 19th and 20th Amendments to the Constitution, party General Secretary Minister Patali Champika Ranawaka said Sunday.
"We extend our full support to the government to pass the amendments and it is a responsibility of all the political parties to vote for the amendments," Ranawaka said ata a media briefing today.
The Minister noted that the 19th Amendment presented to Parliament on March 24 has been amended according to the Supreme Court ruling.
Several sections of the original amendment needed a public referendum, the court ruled, and accordingly, the government has removed those clauses that need a public referendum in the amended version.
Speaking at a function in Ampara Saturday Sri Lanka Muslim Congress (SLMC) leader and Minister Rauf Hakeem said that all political parties in this country should support the 19th Amendment to the Constitution and the President has the strength to obtain the support of everyone for this purpose.