"The polling was approximately 57.03 per cent and passed off by and large peacefully," office of UP Chief Electoral Officer said here.
The polling percentage on these 49 seats was 55.04 in the 2012 state assembly polls.
The poll percentage in the first phase of the current state polls was 64.22. It was 65.16 in the second phase, 61.16 in the third phase, 60.37 in the fourth phase and 57.37 in the fifth phase.
Besides SP patron Mulayam Singh Yadav's Azamgarh being in focus, Gorakhpur Lok Sabha constituency of firebrand BJP leader Yogi Adityanath, and Mau, where jailed gangster-turned-MLA Mukhtar Ansari is in fray, also figured in the penultimate phase of polling. This phase also covered some districts bordering Nepal.
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The districts where polling is going on in the sixth phase are Mau, Gorakhpur, Maharajganj, Kushinagar, Deoria, Azamgarh and Ballia.
The prestige of Union minister Kalraj Mishra, who represents Deoria in the Lok Sabha, is also at stake in this phase of the crucial state polls.
BJP is contesting from 45 seats, while its ally Apna Dal is trying its luck in one seat in this phase.
Prominent candidates in this phase include BSP turncoat
Swami Prasad Maurya from Padrauna (Kushinagar), former BJP state president Surya Pratap Shahi from Pathardeva (Deoria), Shyam Bahadur Yadav (SP), son of former Governor Ram Naresh Yadav from Fulpur Pawai (Azamgarh), SP turncoats Ambika Chowhdury and Narad Rai, who are contesting on BSP ticket from Fefna (Ballia) and Ballia Sadar.
In the 2012 Assembly polls, of the 49 seats, 27 were won by SP, 9 by BSP, 7 by BJP, 4 by Congress and 2 by others.
A total of 17,926 polling booths and 10,820 polling centres have been set up in the sixth phase.
The highest number of 23 candidates are contesting from Gorakhpur and the least (seven) are from Mohammadabad Gohna seat in Mau district.
The Central paramilitary forces assisted the local police in ensuring free and fair polls and carried out flag march in sensitive areas.
Police patrolling was intensified along inter-district borders and barriers were erected on highways to keep an eye on movement of vehicles.
Possible trouble from Maoists and the porous Indo-Nepal border were the two biggest challenges before the police in Maharajganj.
"The 84-km-long Indo-Nepal border was sealed by Sashastra Seema Bal (SSB) and only emergency vehicles were allowed to cross the border," District Electoral Officer Virendra Kumar Singh said.
Cameras were installed on trade and transit points along India's border with Nepal to prevent illegal movement of people during polling.