He is former member Of Bihar Legislative Assembly from 106th Ziradei constituency in Siwan district.

Kushwaha began his political career in the Communist Party of India (Marxist–Leninist) Liberation.

Following the murder of student activist Chandrashekhar Prasad, he filed the FIR against the sitting member of parliament, Mohammad Shahabuddin.

He became a member of the Rashtriya Lok Samta Party afterwards and then later joined the Janata Dal (United).

In December 2018 chief judicial magistrate of Siwan district summoned him in the 18 year old murder case after he won the 2015 Assembly Election.