Trivendra Singh Rawat was on Saturday sworn-in as the new Uttarakhand Chief Minister.
He was administered the oath of office by Governor Krishna Kant Paul.
Prime Minister Narendra Modi, Bharatiya Janata Party President Amit Shah and a host of senior party leaders and Union Cabinet Ministers attended the oath-taking ceremony of Rawat, a long-time Rashtriya Swayamsevak Sangh activist.
He was elected by the BJP’s newly elected Uttarakhand MLAs as the legislative party leader on Friday evening.
Rawat, an organisational man of the Bharatiya Janata Party (BJP) in Uttarakhand and the party in-charge for Jharkhand, won his traditional Doiwala seat by defeating Congress' Hira Singh Bisht by over 24,000 votes.
Rawat, a former swayamsewak of the Rashtriya Swayamsewak Sangh (RSS), is considered close to BJP President Amit Shah.
Rawat was in close touch with Prime Minister Narendra Modi when the latter was a General Secretary of the BJP and in charge of Uttarakhand.
During the 2014 Lok Sabha elections, Rawat worked closely with Amit Shah in Uttar Pradesh, where the BJP swept all but seven seats. He is also credited with the BJP's win in Jharkhand.
BJP legislators in Uttarakhand met on Friday evening in Dehradun to elect Rawat as their leader in the presence of central observers Saroj Pandey and Narendra Tomar. Rawat will take oath as CM at 3 pm on Saturday.
(With IANS, ANI inputs.)