A campaign to pressurise the President to abolish the Executive Presidency and implement the 19th Amendment would be launched by Venerable Maduluwawe Sobitha Thera and Jathika Hela Urumaya (JHU) President Venerable Athuraliye Ratana Thera on November 12 at a mass rally at the Muttaiah Park in Colombo, the prelates announced today.