Voting began early Sunday for 55 Assembly seats in the fourth and penultimate phase of Bihar election amid tight security arrangements.br br Polling is being held from 7 AM to 5 PM in 43 constituencies, while it has been shortened by one hour in 8 seats and voting would end at 3 PM in four seats, said R Lakshamanan, Additional Chief Electoral Officer.br br br br As many as 1,47,39,120 lakh voters are eligible to decide the fate of 776 candidates in fray in 55 of the 243 assembly constituencies spread over Gopalganj, Siwan, West Champaran, East Champaran, Sheohar, Sitamarhi and Muzaffarpur districts.