Polling began on Thursday for 95 Lok Sabha seats spread across 11 states and the union territory of Puducherry, with Tamil Nadu witnessing contest in 38 constituencies.
Voting was also underway in 35 assembly constituencies in Odisha and in 18 assembly seats in Tamil Nadu.
Prominent faces in the fray in the Lok Sabha contest are Union ministers Jitendra Singh, Jual Oram, Sadananda Gowda and Pon Radhakrishnan; former prime minister H D Deve Gowda; DMK's Dayanidhi Maran, A Raja and Kanimozhi; Congress leaders Verappa Moily and Raj Babbar; National Conference president Farooq Abdullah and BJP's Hema Malini.
Over 15.80 crore voters will decide the fate of the 1,600-odd contestants.
Here are the voter turnout numbers from all the states: Tamil Nadu:
Polling in the 38 Lok Sabha constituencies in Tamil Nadu crossed the half way mark on Thursday with 52.02 per cent of the total 5.8 voters casting their vote.
Speaking to reporters here, Tamil Nadu Chief Electoral Officer Satyabrata Sahoo said 52.02 per cent of the eligible voters had voted by 3 p.m.
In 2014, polling of about 73 per cent was registered.
An impressive 69 per cent voters exercised their franchise in three Lok Sabha constituencies having Naxal presence, during second phase of Lok Sabha
election in Chhattisgarh Thursday, election officials said.
Voting began in Kanker, Rajnandgaon and Mahasamund constituencies at 7 am.
"Altogether 68.70 cent voting has been recorded till 5 pm," the official said.
The number may go up as final data was yet to be received from several polling booths, he said.
Maharashtra recorded a moderate voter turnout with around 57 percent voting recorded till 5 p.m for the 10 Lok Sabha constituencies in the state, Election Commission (EC) officials said.
The highest 60.88 per cent turnout was recorded in Nanded and the lowest 51.98 per cent in Solapur.
The poll percentage in other constituencies was Buldhana 57.09 per cent, Akola 54.45, Amravati 55.43, Parbhani 58.50, Hingoli 60.69, Beed 58.44, Osmanabad 57.04 and Latur 57.94 per cent.
At the closing time for elections, there were long queues of voters, including many women and first-timer voters, outside many polling stations.
Moderate to heavy polling ranging from 45.34 per cent to 72.97 per cent was witnessed in the 14 Lok Sabha seats in Karnataka till 5 p.m. on Thursday, an official said.
"According to reports and data received from the presiding officers in all the 30,164 polling booths, the average voter turnout was 61.80 per cent," Joint Chief Electoral Officer A.V. Surya Sen told IANS here.
Dakshina Kannada saw heavy voter turnout of 72.97 per cent, followed by 71.75 per cent in Mandya and 70.28 per cent in Tumkur.
The lowest polling of 45.34 per cent was in Bangalore Central as well as Bangalore North and Bangalore South.
Bangalore Rural, however, registered 59.43 per cent in the first 10 hours of the day.
The second phase of Lok Sabha election on Thursday in five of Assam's 14 constituencies recorded 73.32 per cent polling till 5 p.m. amid reports of scuffles between miscreants and security forces in Hailakandio district of Barak Valley.
The polling percentage is likely to shoot up as polling was continuing in some centres because of serpentine queues.
In some of the remote polling stations, the Returning Officers are yet to report back to the Chief Electoral Officer's office about the polling percentage, officials said.
While Karimganj recorded 71.41 per cent polling, Silchar saw 71.79 per cent till 5 p.m. The Autonomous District (Diphu) polled 69.51 per cent, Mangaldai 75.07 per cent and Nowgong 75.71 per cent.
The overall polling percentage in the 2014 Lok Sabha election across the 14 constituencies was 80.13 per cent.
Election officials said there was also stone pelting on security forces.
The second phase of polling in five Lok Sabha and 35 Assembly constituencies in Odisha recorded 64 per cent voter turnout on Thursday, said state's Chief Electoral Officer (CEO) Surendra Kumar.
"Voting by nearly 64 per cent of total 76.93 lakh electorate was recorded by 5 p.m. This is a tentative figure and this is very likely to change after compilation of information from fields. The voters, who are in the queue, are still voting in some areas," said Kumar.
Elections were held for Bargarh, Sundargarh, Bolangir, Kandhamal and Aska Lok Sabha seats and 35 Assembly seats under them.
Kumar said he has recommended fresh polling in six booths due to human error during the replacement of Voter Verifiable Paper Audit Trail (VVPAT) machines.
Re-polling will take place at two booths -- booth number 129 in Bonai and 213 in Sundergarh will. Besides, the Commission has also recommended repolling in booth number 68 in Bargarh, 235 in Atabira, and 210 and 222 in Daspalla.
Jammu and Kashmir:
Srinagar constituency in Jammu and Kashmir witnessed the lowest polling at 13. 43 percent.
There were sporadic incidents of stone pelting at polling stations in Batmaloo area of Srinagar city and at three other places in Badgam district which too falls under the Srinagar Lok Sabha seat.
While Srinagar district recorded the lowest voter turnout till noon, the turnout was comparatively better in Ganderbal and Badgam districts of the Srinagar seat.
Over 76 percent of the electorate cast their votes in the three northern West Bengal constituencies in the second phase of the Lok Sabha elections on Thursday.
Polling remained largely peaceful barring sporadic incidents of violence and vandalism, including an attack on a CPI-M candidate and the smashing of an Electronic Voting Machine (EVM).
Till 5 p.m., the overall polling percentage was 76.07 per cent, with Raiganj recording 73.31 per cent, Jalpaiguri 82.76 per cent and Darjeeling 72.14 per cent turnout, an Election Commission official said in Kolkata.
Voting across 5,390 polling stations began at 7 a.m. and officially ended at 6 p.m. amid tight security by both the central forces and the state police force. However, in a number of booths, queues could be seen well after the deadline.
Much of the violence was reported from Chopra in Darjeeling constituency, where voters put up a road blockade demanding that CRPF personnel be deployed in all polling stations to ensure their security.
Over 62 percent cent turnout was recorded in five of Bihar's 40 Lok Sabha seats that saw voting in the second phase on Thursday amid cases of poll boycott, malfunctioning of EVMs and stray violence.
According to the Bihar Chief Electoral Officer's office here, polls passed off peacefully amid tight security in Banka, Bhagalpur, Purnea, Kishanganj and Katihar parliamentary constituencies, except a case of reported firing by a Sashastra Seema Bal jawan at a polling booth in Banka.
A senior police official also said that the voting was peaceful so far and there were no reports of violence, except some clashes between supporters of rival parties.
There were also reports of problems in EVMs in Purnea, Katihar and Banka.
More than 85 lakh voters were eligible to decide the fate of 68 candidates in this round.
In neighbouring Puducherry's sole Lok Sabha seat, the poll percentage was 80 percent.
In the Lok Sabha constituency, the fate of 18 candidates will be decided by 9.73 lakh voters.
Over 62 per cent of the votes were cast in the eight constituencies which went to the polls in Uttar Pradesh in the second phase of Lok Sabha elections on Thursday.
The Election Commission figures put the overall voter turnout at 62.30 percent till 6 pm, when polling closed. However, voters in the queue at the closing time will be allowed to vote, EC officials said.
Polling was held in four reserved constituencies of Nagina, Bulandshahr, Hathras and Agra, besides four general constituencies of Amroha, Aligarh, Fatehpur Sikri and Mathura.
According to the EC, the polling percentage till 6 pm was 62.10 in Nagina, 68.77 in Amroha, 62.14 in Bulandshahr, 61.25 in Hathras, 59.60 in Agra, 62.80 in Aligarh, 60.56 in Mathura, and 61.16 in Fatehpur Sikri.
There are 1.4 crore registered voters in the eight constituencies.
In Manipur, which went to polls in the second phase, the turnout was 74.3 percent.Queues of voters formed outside many of the 1,300 polling booths even before they opened at 7 a.m.