About 26 per cent of 25 million-odd eligible voters cast their ballot in 17 constituencies of Uttar Pradesh till 2 pm, election officials said in Lucknow on Thursday.
Polling stations opened at 7 am. However, a slow turnout was reported in the early hours from almost all the constituencies due to the scorching heat.
According to poll officials, 26 per cent percent voter turnout was reported till 2 pm with Allahabad registering the highest polling at 29 per cent.
The high profile parliamentary constituency of Amethi, the pocket borough of Congress general secretary Rahul Gandhi, registered a poor voter turnout in the initial hours of polling.
Amethi recorded the lowest turnout till 9 am at 5.5 per cent, an election official said. However, it improved to 24 per cent by late afternoon.
Considering the rise in temperature during the day, the officials were expecting a higher turnout in the morning.
Officials said sporadic incidents of malfunctioning of electronic voting machines were reported from some constituencies, including Amethi, Pratapgarh and Domariyaganj.