The Congress in Mizoram has replaced former assembly speaker Hiphie and Amit Kumar Chakma with K T Rokhaw and Kali Kumar Tongchangya respectively as party's candidates for the upcoming assembly elections.
Rokhaw will contest from Palak and Tongchangya from Tuichawng constituency.
Earlier, Hiphei on Monday had resigned from his post, the House as well as the Congress, and joined the BJP, saying its central leadership had promised to enhance powers of the state's autonomous district councils.
Union Home Minister Rajnath Singh has promised amendment to the sixth schedule of the Constitution to enable greater autonomy to the autonomous district councils in Mizoram, he told reporters in Aizawl.
"The BJP and its coalition partners will form government in Mizoram, " he said, adding that the ruling Congress would be defeated in the polls.
Assembly elections in Mizoram are scheduled to be held in single phase on November 28, 2018. In the last elections in 2013, the Indian National Congress had won a majority in the 40-seat Mizoram Assembly.
Results for Mizoram Assembly elections 2018 will be declared on December 11 along with results of Assembly elections in four other states - Madhya Pradesh, Chhattisgarh, Telangana and Rajasthan.
The tenure of Mizoram Assembly ends on December 15, 2018.
( With inputs from agencies )