Less than 24 hours later, one-by-one they're taking back their signatures. What a disgrace, this is partly why Kabila has been in office so long

This probably represents everything wrong with Congolese politics. When you can't even stick to a treaty for a day.

The Dolphin is a clear favourite in this race with this kind of divided opposition.

Bunch of selfish clowns who only care about themselves.

Less than 24 hours later, one-by-one they're taking back their signatures. What a disgrace, this is partly why Kabila has been in office so long

Kindly elaborate a little more

 in short opposition wanted to pick a common candidate to face the candidate kabila picked to replace him and  among those guys who are more known were in contention with another guy martin fayulu who you surely heard in songs but who is less influential than them so it was even a surprise for people that arguably the least influent was picked and those guys had signed  agreement to let him face the kabila candidate
 then the day after they changed their mind,by the way i saw on la mama people mocking jb over the fact soraya was calling vital papa and rooting for him so that her mother becomes the first lady

Retirada