He said his party's historic victory in Tripura is "as much an ideological one".
In a series of tweets, Modi said that "time and again, election after election, the people of India are reposing their faith in the positive and development oriented agenda of the NDA. People do not have the time or respect for negative, disruptive and disconnected politics of any kind. "
He thanked the people of Nagaland for supporting BJP and its allies.
"I assure my sisters and brothers of Nagaland that we will continue to work for the progress and prosperity of Nagaland. I applaud the tireless work of the local BJP unit," he said.
He said the welfare of Meghalaya is of utmost importance for his government.