As the country gears up to exercise its role in the largest democracy, with eyes on the 91 seats across 20 states and 1285 candidates, here are some of the salient constituencies to watch out.
In the first phase, four Lok Sabha seats and 18 Assembly constituencies would go for polling in the state of Odisha.
Here are the two crucial Parliamentary constituencies in the Eastern state out of the total 21:
A constituency where no party has ever witnessed a victory for two consecutive terms since 1998, the Kalahandi seat will see a triangular contest between BJD, BJP and the Congress candidates.
The BJD sitting MP from the seat, Arka Keshari Deo is replaced with Puspendra Singhdeo, who is a local MLA from Kalahandi's Royal family will be contending against BJP's Basanta Panda and Bhakta Charan from Congress who is a three-time MP.
With three heavy-weights in a fray, the electoral battle between the total seven candidates in the constituency would go to polls from 7 AM on April 11.
A BJD controlled tribal constituency would be facing a three-way contest between BJP's Jayaram Pangi, who took the Congress seat on BJD's seat back in 2009 from the former chief minister Giridhar Gamang, now a BJP leader.
Congress has appointed Saptagiri Ulaka, son of former state minister Ramachandra Ulaka, while BJD fielded Kaushalaya Hikaka on the seat.
In 2014, BJD's Jhina Hikaka defeated Congress' Gamang , who now has taken a step back with the seat being fought by his wife now.
Adilabad, Peddapalle, Karimnagar, Nizamabad, Zahirabad, Medak, Malkajgiri, Secunderabad, Hyderabad, Chevella, Mahbubnagar, Nagarkurnool, Nalgonda, Bhongir, Warangal, Mahabubabad, Khammam, Araku, Srikakulam, Vizianagaram, Visakhapatnam, Anakapalle, Kakinada, Amalapuram, Rajahmundry, Narsapuram, Elluru, Machilipatnam, Vijayawada, Guntur, Narasaraopet, Bapatla, Ongole, Nandyal, Kurnool, Anantapur, Hindupur, Kadapa, Nellore, Tirupati, Rajampet, Chittoor, Arunachal West, Arunachal East, Tezpur, Kaliabor, Jorhat, Dibrugarh, Lakhimpur, Aurangabad, Gaya, Nawada, Jamui, Baramulla, Jammu, Wardha, Ramtek, Nagpur, Bhandara-Gondiya, Gadchiroli-Chimur, Chandrapur, Yavatmal-Washim, Outer Manipur, Shillong, Tura, Mizoram, Nagaland, Kalahandi, Nabarangpur, Berhampur, Koraput, Sikkim, Tripura West, Saharanpur, Kairana, Muzaffarnagar, Bijnor, Meerut, Baghpat, Ghaziabad, Gautam Buddh Nagar, Cooch Behar, Alipurduars, Bastar, Tehri Garhwal, Garhwal, Almora, Nainital-Udhamsingh Nagar, Hardwar, Lakshadweep and Andaman Nicobar Islands.
The voting time in most of the Parliamentary Constituencies going to polls in the first phase is between 7am-6pm. However, in certain sensitive areas and North East States the timings will vary from 7am-5pm/ 7am-4pm/ 7am-3pm.