Part of the greater Kolkata metropolitan area, the largely urban Dum Dum constituency has never been a stronghold of one particular party ever since it came into existence in 1977.
Bordering Jharkhand, Birbhum is largely a rural constituency, dominated by Schedule Castes and tribal communities. Among the tribes, the Santhals account for over 80 percent of the tribal population in the district.
In the aftermath of the 2010 Deganga riots, Basirhat was under the spotlight for the ensuing communal polarisation. The constituency has over 50 percent Muslim population.
In 2009, CPM’s Anup Kumar Saha became an MP from Bardhaman Purba constituency. Sunil Kumar Mandal of the TMC won the seat in 2014 elections.
At least, 72 percent of the Burdwan Durgapur constituency is rural. In the last election, two women candidates fought the election here, in a bid to woo over 7.6 lakh women voters – one of the highest in the state.
Barasat Lok Sabha constituency, which comes under the North 24 Paraganas district, has a sizeable chunk of Matua and Muslim voters.
A total of 22 percent of the Barrackpore population are people who originate from Hindi-speaking areas in Uttar Pradesh and Bihar. Muslims constitute 10 percent of the population.
The TMC has been winning the Bangaon seat since 2009 elections. The incumbent MP is Mamata Thakur, who won the 2015 by-poll to enter Parliament.
A Congress stronghold since last two decades, Baharampur in Murshidabad is dominated by Muslim voters, who constitute at least 63 percent of the population.
Arambagh had been a stronghold of the Left even during tough times. In fact, Anil Basu of the CPM had registered the biggest electoral victory in Indian history in 2004 (now surpassed) in this constituency. However, in 2014, the seat fell to TMC for the first time.
Congress candidate Vijay Bahuguna was elected MP in 2009. BJP’s Bhagat Singh Koshyari won the elections in 2014 by a margin of over 2.84 lakh votes.
The Bahujan Samaj Party has won the seat thrice since the 1999 elections. BJP’s Rajesh Verma is the incumbent MP from the constituency.
Vinay Kumar Pandey of the Congress won the seat in the 2009 elections while Daddan Mishra of the BJP defeated Samajwadi Party’s Atiq Ahmed to win the seat.
Mithlesh Kumar of the Samajwadi Party won the seat in 2009 before Minister of Sttate for Agriculture Krishna Raj won the seat for the BJP.
In 2009 elections, Gorakhnath Pandey registered a victory on this seat. In 2014 elections, Virendra Singh of the BJP won the seat.
In 2009, Bhima Shankar, a BSP candidate, won the seat while Sharad Tripathi of the BJP won the seat in 2014 elections.