[2][3][4] Vij joined Akhil Bharatiya Vidyarthi Parishad, a student wing of Rashtriya Swayamsevak Sangh, while he was studying at S. D. College, Ambala Cantt.

In 1990, when Sushma Swaraj was elected to Rajya Sabha, the Ambala Cantonment seat became vacant.

Vij was asked to resign from service and contest a by-election by the BJP Party.

In 2019, Vij was again elected for the sixth time as Bharatiya Janata Party's MLA Ambala Cantonment.

[7][8] In the 2024 Haryana Legislative Assembly election, Vij again won from the Ambala Cantonment seat, by 7,248 votes.