His elder brother, Katung Wahge, is the Chief Engineer of Western Zone of Public Works Department, Government of Arunachal Pradesh.
He embarked on a career in politics after joining the youth wing of the BJP, Bharatiya Janata Yuva Morcha (BJYM), in 2000 and held various positions in the organisation till 2008.
[1] In the 2017 Arunachal Pradesh Legislative Assembly by-election, Wahge was given a BJP ticket to contest from Pakke-Kessang Vidhan Sabha constituency.
Bypoll to this constituency was necessitated following the rejection of Indian National Congress politician and the former Deputy Chief Minister of Arunachal Pradesh Kameng Dolo's plea by the Supreme court against a judgement of the Guwahati High Court declaring the election of Dolo in the 2014 Arunachal Pradesh Legislative Assembly election void.
He received the certification of his election to the position of the president in the party's state organisational structure by the National General Secretary of the BJP, Anil Jain, in the presence of party's central election observer for the election of president in the state Vinod Sonkar, Education Minister Taba Tedir, Rural Works Department Minister Honchun Ngandam and other legislators and senior leaders of the state BJP.