Pictures of the state BJP chief being given the Guard of Honour on his arrival at Bageshwar were shared on social media.
A four-time MLA from Haridwar and a state minister, Madan Kaushik has been made the BJP's state unit president in place of Banshidhar Bhagat by JP Nadda.
Kaushik is a fourth-term MLA from Haridwar constituency, and is one of the senior most legislators of the party in the hilly state.
The chair kept at the dais at the IRDT auditorium for Kaushik remained empty even as Sisodia attacked the state government for allowing corruption to flourish right under its nose.
Kaushik, in a four-page letter written in Hindi, alleged that Aam Admi Party and its leaders are just 'Seller of Hopes'.
The Aam Aadmi Party (AAP) has announced that it will fight the next assembly elections in the hilly state.