Before the separation of Uttrakhand from Uttar Pradesh, Zamania was numbered 232, amongst 425 constituencies.

Bharatiya Janta Party candidate Sunita Singh won in 2017 Uttar Pradesh Legislative Elections by defeating Bahujan Samaj Party candidate Atul Rai by a margin of 9,264 votes.

[2] This was only the 2nd victory for BJP since the party's formation, the 1st came in 28 years earlier[3] when Sharda Chauhan won with only 24,402 votes polled for BJP in 1991 & defeated Ravindra Yadav of Janata Dal by a margin of 2,357 votes[4] to establish BJP's presence in the critical Assembly constituency.

To highlight the importance of victory in critical Zamania constituency, Kalyan Singh had awarded state planning and transport ministries with independent charge to Smt Chauhan in Kalyan Singh ministry.

Samajwadi Party continued the tradition by awarding cabinet berths to Kailash (won in 1996 by defeating Sharda Chauhan by a margin of 6,987 votes,[7] 2002) & Omprakash Singh (won in 2012) in Mulayam Singh & Akhilesh Yadav governments.