Former president Megawati Soekarnoputri will join the campaign trail of incumbent gubernatorial candidate pair Basoki "Ahok" Tjahaja Purnama and Djarot Saiful Hidayat to strengthen their re-election bid for next month’s election, a party official has said.

Megawati, the chairwoman of the ruling Indonesian Democratic Party of Struggle (PDI-P), would go all out to support the Ahok-Djarot pair even though Ahok was on trial for alleged blasphemy, PDI-P politician Arif Wibowo told The Jakarta Post on Wednesday.

"Bu Mega will join election campaigns in several crucial regions, including Jakarta," Arif asserted.

(Read also: PDI-P on guard to protect Jokowi: Megawati)

Arif, who is also the secretary of the party's faction at the House of Representatives, further said that all PDI-P-backed candidate pairs taking part in the upcoming simultaneous regional elections across the nation would be supported by the eldest daughter of Indonesia’s first president Sukarno.

Ahead of the Jakarta gubernatorial election on Feb. 15, contesting candidate pairs will have the opportunity to hold a grand closing campaign event before the campaign period ends on Feb. 14, according to Arif.

The three candidate pairs are also scheduled to argue their policy platforms and programs during official debate sessions arranged by the Jakarta General Elections Commission (KPU Jakarta) starting Jan. 13. (dan)