The Congress has been losing one state after another to the BJP in the past few years.
Asked if the Congress had sent feelers to other parties and independents to form the new government, Sangma said: "All parties have gone on their own and the regional parties have not shown any pre-poll alliance either with the Bharatiya Janata Party or the NPP".
The BJP won 35 seats in Tripura's state legislature against the CPI (M)'s 16 seats, according to India's Election Commission.
Spotlighting the differences between the BJP and its coalition partners in the northeast, the Congress today accused the party of playing a "dangerous game of destabilising the region through its blind quest for power at any cost".
Although the NDPP was born as a result of former Nagaland chief minister and current Lok Sabha MP Nephiu Rio's larger political power-play arising out of differences with the NPF, in Nagaland's political landscape, no possible alliance can be dismissed. It has made its presence felt in the state by joining hands with National People's Party (which won 19 seats), United Democratic Party (UDP), People's Democratic Front (PDF), Hill State People's Democratic Party (HSPDP) and an independent candidate.
"The Congress party respects the mandate of the people of Tripura, Nagaland and Meghalaya".
Despite the BJP's success in Tripura, "it will not be possible at all to get through in West Bengal and Odisha".
But they were outsmarted by a quick reaction team of the BJP, comprising Union ministers KJ Alphons and Kiren Rijiju besides Assam minister and former Congress leader Himanta Biswa Sarma. The battle and the focus now shifts to this state as assembly elections are just a couple of months away.
BJP, which did not have a single councillor in all of Tripura and lost its deposit in 49 constituencies out of 50 in 2013 assembly elections, had managed this land sliding victory.
He added that the outcome of elections in the northeastern states will not affect poll results of Karnataka. The win boosts the BJP ahead of next year's national elections.