Polling began at 7 am and will continue till 6 pm, officials said.
While poll officials said voting was going on smoothly, Congress' Rohtak candidate Deepender Singh Hooda, who is seeking re-election for a fourth term, accused Haryana Minister and Rohtak MLA Manish Grover of "intimidating" voters by forcibly entering some polling booths.
The poll percentage recorded till 4 pm was 51.93 per cent, poll officials said.
Kurukshetra, from where Haryana minister Nayab Singh Saini is pitted against Congress' Nirmal Singh and INLD's Arjun Chautala, recorded a poll percentage of 56.99 while Hisar recorded 55.50 per cent voting.
Sirsa, Karnal, Bhiwani-Mahendergarh, Sonipat, Rohtak, Gurgaon, Ambala and Faridabad registered polling percentage of 52.71, 47.31, 53.32, 52.59, 52.74, 49.53, 49.71 and 50.81 respectively, officials said.
After casting his vote, he posted a picture of his inked finger on Twitter and wrote, "Voting is your right and responsibility towards nation building. Go vote."
Polling was initially slow in some constituencies, including Gurgaon and Rohtak, but started to pick pace as the day progressed.
Polling was going on peacefully across the state, Haryana's joint chief electoral officer Inder Jeet said, adding there were some glitches in EVMs and VVPATs at a few booths early in the morning, but those were replaced immediately.
Chief Minister Manohar Lal Khattar was among the early voters in Karnal while former Bhupinder Singh Hooda of the Congress, fighting the elections from Sonipat, cast his vote at Kiloi in Rohtak district. State Congress chief Ashok Tanwar exercised his franchise in Sirsa. Jannayak Janata Party (JJP) candidate and the sitting MP in Hisar Dushyant Chautala also cast his vote in Sirsa.
"This is a serious matter and the Election Commission must look into this," he said.
Enthusiastic voters were seen at several places. A bridegroom went to cast his vote in Mullana in Ambala parliamentary constituency before solemnising his marriage.
At Sirsa and Hisar, voters queued up since early morning to cast their vote. There were reports of a few centenarians also exercising their franchise.
Deepender Hooda, is seeking re-election for the fourth term from Rohtak as a Congress nominee.
Union minister Birender Singh's son Brijendra Singh (BJP) and former chief minister Bhajan Lal's grandson Bhavya Bishnoi (Congress), both political greenhorns, are contesting from the Hisar Lok Sabha seat, where they face JJP's Dushyant Chautala, who is the grandson of former chief minister O P Chautala.
Former Union minister Kumari Selja and state Congress chief Ashok Tanwar are fighting from Ambala and Sirsa, respectively, for the party. AAP state president Naveen Jaihind is contesting from Faridabad.
Among the major parties in the fight are the BJP, the Congress and the INLD, which are fighting the 10 seats independently.
Notably, all the major players in Haryana are eyeing good performance in the Lok Sabha polls as the outcome could have a bearing on the Vidhan Sabha polls which are due in October.
In the 2014 parliamentary polls, the BJP contested eight seats and won seven. Its then ally the Haryana Janhit Congress had fought on two seats, losing both. The INLD won two seats and the Congress could retain only the Rohtak seat last time.
A large number of women were seen in queues at the tastefully decorated 'Sakhi Matdan Kendras', which are exclusively run by women and have been set up in each assembly segment.
Officials said that necessary arrangements, including those pertaining to security, have been put in place to ensure smooth polling.
As many as 19,441 polling stations have been set up in the state, including 5,510 in urban areas and 13,931 in rural areas. Webcasting is being done in 1,020 polling booths while 67,000 security personnel have been mobilised to ensure smooth conduct of the polls.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)