Congress on Thursday released two more names of candidates for the upcoming Assembly polls in Assam. Ratan Engti will contest from Bokajan and Sum Ronghang from Diphu -- both seats are reserved for the Scheduled Tribes. As of date, Congress has released names of 68 candidates for the 126-member Assam Assembly polls which the party is contesting in alliance with All India United Democratic Front (AIUDF) and Bodoland People's Front (BPF). The party had on Wednesday released a list of 26 candidates, and appointed senior leaders Mohan Prakash and Jaydev Jena as special observers. The elections are scheduled to be held in three phases in Assam.