A schedule of activities released by Organising Secretary of the party, Sen Isita Izunaso, on Friday in Abuja, indicated that the forms would be on sale until April 17.
It showed that screening of aspirants would take place from April 23 to April 25, and that screening appeal would be from April 26 to April 27.
The timetable revealed that the primary election would be on May 5, while the appeal that may emanate from the exercise addressed between May 7 and May 9.