Nurul Izzah Anwar, Mr. Anwar’s daughter and a member of Parliament, said that the board was expected to rule that there had been a miscarriage of justice and that her father was innocent.
The king’s pardon would allow Mr. Anwar to participate in politics again, lifting a five-year ban on political activity that he would have faced based on his release under normal circumstances.
Mr. Anwar is expected to replace the 92-year-old Mr. Mahathir as prime minister at some point. Mr. Anwar’s wife, Wan Azizah Wan Ismail, is the deputy prime minister and has long said that her goal was to win his freedom.
The pardon process can take many months. An immediate pardon, which was agreed on last week in meetings between the king, Mr. Mahathir and Ms. Wan Azizah, according to the new prime minister, would accelerate the potential timetable for Mr. Anwar to take over from Mr. Mahathir.
But there are still some hurdles. To become prime minister, Mr. Anwar must win a seat in Parliament. And for a new election to be held, someone must leave office to create a vacancy.
Ms. Nurul Izzah said that there was no rivalry between the two leaders, who were once allies and then foes before becoming allies again.
“He has given his unequivocal support to the prime minister, Mahathir Mohamad, and the reform agenda,” she said of Mr. Anwar.