Limbu started his political journey being involved in the Nepal Students Union, the student wing of the Nepali Congress. He received the party’s membership in 2042 BS.
Limbu worked as Morang District President of Nepali Congress (Democratic) in 2062 BS after the party split. He became District Chairman for the second consecutive term since 2072 BS after the unification of the party. Limbu was elected Constituent Assembly member in 2070 BS.