He represented the CPIML Liberation in Tejashwi Yadav's Mahagathbandhan alliance during the 2020 Bihar Legislative Assembly Election.

[1][2] Manzil has concentrated his political activity in Agiaon and has been organizing the Sadak Par School Movement in Bhojpur.

His father was a cadre of the CPI(ML) and his uncle spent his life as part of the Jay Prakash movement.

He managed to get into college in Arrah and taught students to make ends meet but was forced to drop out several times.

[5] Manoj Manzil along with 22 others were sentenced to life imprisonment in a case relating to the murder of JP Singh during the 2015 Bihar Legislative Assembly election.