Tandon's political career began in 1991 when he was made the in-charge of the
Lok Sabha election in the
Amritsar constituency for
BJP. In 1993, he played the role of the election in-charge of the
Lok Sabha election for the
BJP from
Jalandhar constituency. Tandon was made a member of the
BJP Executive in
Chandigarh in 1995. In 1997, he was made the in-charge of the Assembly election for BJP from the
Rajpura constituency (
Punjab) Tandon was made the convener of the Chartered Accounts Cell of
BJP Chandigarh Tandon was re-instated as the State President of BJP Chandigarh in January 2013 till 2020, following which, he was made the co-incharge for
Himachal Pradesh He was BJP's candidate for the
2024 Lok Sabha elections from
Chandigarh, replacing incumbent MP
Kirron Kher. ==Book writing==