Sangma, the outgoing chief minister, said he has support of the BJP, the HSPDP and two Independent MLAs, while asserting the total tally may go up in the coming days as he is in touch with other parties as well.
National People's Party (NPP) president Conrad K Sangma on Monday said his party will have eight ministers in the next Meghalaya government headed by him, while its allies will get four ministerial berths.
Prime Minister Narendra Modi and Home Minister Amit attended the swearing in ceremony as did BJP president J P Nadda.
Meghalaya Chief Minister Conrad K Sangma retained the key departments for his National Peoples Party, and gave the lesser politically significant ones to alliance partners Bharatiya Janata Party, Hill State Peoples Democratic Party and United Democratic Party as he allocated portfolios on Thursday.
Conrad Sangma on Friday evening submitted the letter of support to Meghalaya Governor Phagu Chauhan at Raj Bhawan signed by 32 MLAs of NPP, BJP, Hill State People's Democratic Party and two Independents.
Thomas A Sangma of the ruling National People's Party-led Meghalaya Democratic Alliance (MDA) coalition was on Thursday elected as the speaker of the 11th Meghalaya assembly.
The ruling National People's Party (NPP) in Meghalaya won 26 seats, but fell four short of the halfway mark of 31.
Post-poll violence that erupted in at least three assembly constituencies in Meghalaya left several people injured, while one person was found dead in a mysterious circumstance, officials said on Friday.
Prime Minister Narendra Modi will be on a two-day visit to the North East from Tuesday, during which he will attend the oath-taking ceremonies of new governments in three states of the region.
The bypolls were conducted for two Assembly seats in Uttar Pradesh, one each in Meghalaya and Odisha and the Jalandhar Lok Sabha constituency in Punjab.
Six non-Congress parties and an independent MLA constitute the MDA government.
All eyes are on the parties to see which of them can stake claim to power.
Apart from Sangma, 11 other cabinet ministers were also sworn in by the governor.