Voting for the seat started at 7 AM across all polling stations with voters standing in long queues outside various polling stations to exercise their franchise.
Union Minister Ghulam Nabi Azad today cast his vote at DPS polling station in Jammu city.
"There are tough measures taken by the Election Commission of India (ECI) this time to ensure free and fair polling", Azad told reporters here after casting his vote.
Over 18 lakh voters are registered in Jammu constituency which has 2200 polling stations. 80 polling stations have been declared critical.