The BJP-IPFT combine won 17 out of the 20 seats reserved for Scheduled Tribes in the February 18 elections.
Sarma, formerly a Congress party leader, has switched side to join the BJP just before the Assam assembly elections after being denied an audience with Rahul Gandhi. the then vice president of his old party.
Under the leadership of Sudhakar Kohle, MLA and BJP city chief, the party workers danced to the tunes of sandal and burst fire-crackers to express their joy. So the BJP simply started bringing in prominent politicians.More news: Blizzard Teases Diablo III for Switch
"The BJP today is perhaps the most formidable election machine that this country has witnessed in the last 70 years", Yogendra Yadav, a New Delhi-based political analyst, said.
Gowda said the country was seeing a "revival and resurgence" of the Congress starting with Gujarat and the by-polls in Rajasthan and Madhya Pradesh, and "the cutting to size of the BJP due to its corruption and non-performance".
The results further indicate that the Congress has completely ceded ground in the Northeast, which was once considered its loyal bastion.
Earlier, two exit polls had predicted that the BJP will dislodge the CPI (M) in Tripura while a third exit poll claimed a close fight.More news: Brazil's Neymar sidelined with foot surgery
Taking about the victory in the state of Tripura and Nagaland, Prime Minister Modi said that now the time has come when the election analysts in India need to understand the journey from "No one to One".
"We met the Governor and sought his invitation to the single largest party to be called first to form the government as per convention", former Union minister Nath said.
"Tripura voters have given their mandate for a BJP-IPTF government in the state".
"The Congress party has shrunk to its lowest ever size ever". Senior party leaders Ahmed Patel and Kamal Nath are in the state capital of Shillong, working out possible tie-ups with Independent MLAs in a bid to form a government.More news: Jurgen Klopp talks Liverpool win over Newcastle, Mohamed Salah and Philippe Coutinho
He added that the outcome of elections in the northeastern states will not affect poll results of Karnataka. Despite the low score by BJP, it is certain that both the parties will form a coalition government given their alliance. The previous Communist government had streamlined land ownership rights for the tribes, but it had failed to deliver any subsequent reforms. People of Meghalaya have trusted Congress yet again but the party's existence in the other two states has been threatened with the verdict.