[1][2] An RSS veteran, Koshyari served as National Vice-President of BJP and party's 3rd State president for Uttarakhand.

This action received a rap from the SC and was termed as Illegal by the Supreme Court of India in their order dated 11 May 2023.

He took part in the struggle against the Emergency and was imprisoned he was detained in Almora and Fatehgarh Central Jail under the Maintenance of Internal Security Act (MISA), from 3 July 1975 to 23 March 1977.

In 2000, he was appointed minister of Energy, Irrigation, Law, and Legislative Affairs of the newly created state of Uttaranchal.

Media reports have cited that the BJP's central leadership was biased for Bhuwan Chandra Khanduri, despite Koshyari supported by RSS and majority of the elected MLAs.

He stepped down as the Governor of Maharashtra on 12 February 2023, a month after he met Prime Minister Narendra Modi and expressed his desire to resign from his post and retire,[13] after many decades as a politician and social activist.

[16][17][18][19][20] While Koshyari served as the governor, he sparked a row in a speech by saying, "There will be no money left, and Mumbai will cease to exist as the financial capital of India, if Rajasthani-Marwaris and Gujaratis are removed from these areas of Maharashtra".

[21][22] Shiv Sena Chief Uddhav Thackeray lashed out to the Governor for his insensitive and senile remarks terming it an insult to Marathi pride.

[23] In November 2022, while giving a speech to students of a university, attended by NCP leader Sharad Pawar and Union Minister Nitin Gadkari, Governor Koshyari called Chhatrapati Shivaji Maharaj an olden days idol, sparking a row of discontent over whole Maharashtra.