About 600 people had expressed their interest to join the party, 50 of whom were women.
Party leader and governor for NCD Powes Parkop spoke highly of the selected candidates, whose backgrounds he described would make them visionary, smart and passionate leaders for the country.
Parkop said SDP is for gender equality and focuses on the resources and efforts of getting women who have a better chance of winning.
SDP Candidate for West Sepik Provincial Seat Dorothy Tekwie said it is an honor to be a candidate for the Social Democratic Party.