Polling began today for the seven Lok Sabha constituencies in the country's capital where BJP, Congress and newbie AAP are engaged in a three-cornered electoral battle.

The voting began at 7 am at over 11,500 polling stations out of which 327 have been declared critical and 90 hyper critical. A total of 1.27 crore voters are eligible to exercise their franchise which include over 3.37 lakh first-timers. A total of 150 candidates are in the fray.

The Congress had won all seven seats in the 2009 Lok Sabha polls. The prominent contenders in the fray include Union Ministers Kapil Sibal and Krishna Tirath, Delhi BJP Chief Harsh Vardhan, Congress General Secretary Ajay Maken, journalist-turned-politician Ashutosh, Sandeep Dikshit, grandson of Mahatma Gandhi, Rajmohan Gandhi, and BJP's Meenakshi Lekhi.