The decision was taken at a meeting between BDB chief Badruddoza Chowdhury and the leaders of NAP and NDP.
The leaders of the two parties met B Chowdhury, also a former president, at his Baridhara residence around 4pm and held a closed-door meeting.
Earlier on Tuesday, NAP and NDP announced to sever ties with the 20-party alliance as they think BNP has deviated from its moral position by forging the Jatiya Oikyafront with the actors of the 1/11 political changeover and ‘minus-two formula’.
Talking to reporters after the meeting, NAP chairman Jebel Rahman Gani said they want to work together under the leadership of B Chowdhury for ensuring continuation of democracy and a fair election.
“We consider the ex-president as our guardian. We three parties will work together for ensuring a healthy democratic practice in the country,” he added.
NDP chairman Khandaker Golam Mortuza said they came to B Chowdhury for forging a greater unity of democratic and nationalist forces.
BDB joint secretary general Mahi B Chowdhury said the meeting decided to expand the Jukta Front involving NDP and NAP.
On October 13, Jukta Front’s two partners -- Jatiya Samajtantrik Dal (JSD-Rob) and Nagorik Oikya -- formed Jatiya Oikyfront with BNP and Dr Kamal Hossain’s Oikya Prokriya.