Patna/Aurangabad/Gaya: About 46.32 per cent of the 75 lakh voters in Bihar's four Lok Sabha constituencies have exercised their franchise till 5 pm on Friday, officials said.

Voting began at 7 a.m. and will continue till 6 p.m., a senior election official said.

Voters will decide the fate of 38 candidates on these four seats.

Apart from the reserved seats of Gaya and Jamui, tight security arrangements were made in Nawada and Aurangabad, where most of the nearly 5,000 polling stations have been marked as "sensitive".

Officials said that till 5 pm, more than 49.95 percent voters in Aurangabad Lok Sabha constituency, 48.54 percent in Gaya, 47.09 percent in Jamui and 40.2 percent in Nawada have exercised their franchise.

Of the four seats, Nawada has the highest number of voters at 20.06 lakh with a total of eight candidates in the fray, although the main contest is between BJP's Rajya Sabha MP Vivek Thakur and RJD's Shravan Kushwaha, who is seeking entry into the Lok Sabha.

There are 18.18 lakh voters in Gaya, but there are maximum 14 candidates. Here NDA ally former chief minister Jitan Ram Manjhi, who is just a few months away from turning 80, is making another attempt to enter Parliament.