 Negotiations became drawn out, with the change of government from the Dunstan government to the Liberal government under David Tonkin after the 1979 state election.After the government proposed major changes to the legislation, over 100 Pitjantjatjara people camped at Victoria Park Racecourse in February 1980 in protest.In October 1980, the Tonkin government introduced an amended bill after a long period of negotiations, in which Premier Tonkin took a leading and personal role.