Opposition Samajwadi Party and RLD have complained of snags in EVM machines. "Getting reports of problems in EVMs in the by election but still voters should go for casting votes), SP president Akhilesh Yadav said in a tweet.

SP spokesman Rajendra Chaudhary charged that 140 EVMs have been tampered with in Noorpur and similar reports have also come in from Kairana. "BJP wants to avenge defeat in earlier bypolls in Gorakhpur and Phulpur anyhow and win these by polls," Mr Chaurdhary charged.

RLD spokesman Anil Dubey said there are reports of EVM malfunctioning in both the constituencies, specially in areas where the RLD-SP have influence. "We (RLD and SP) are going to meet the CEO to lodge a formal complaint in this regard," he said.