Jega announced her defection while speaking at a ceremony in Birnin Kebbi on Wednesday.
She insisted that the injustice and a lack of purposeful leadership made her leave the party.
She went on to reveal that she decided to join the APC because of the many achievements of Gov. Atiku Bagudu, claiming that she joined the party with over 800 supporters.
Jega said: “I have been in PDP for many years, they have nothing to show to people and we have been neglected by the party.
“I even use my money for the cause of the party, but yet I have not seen any change with my people, especially the women that I represent.
“Prior to my defection, I was in charge of eight local government areas under the PDP, I left with most of my followers.”
Some of the dignitaries at the ceremony were Alhaji Abubakar Kana-Zuru, the state APC Chairman; Alhaji Sani Zauro, the Chairman of the state APC Elders Forum; and Alhaji Faruk Musa-Yaro, Personal Assistant to the state governor.