The BJP's Aman Giri won the Gola Gokarannath Assembly bypoll on Sunday by defeating his nearest rival and Samajwadi Party candidate Vinay Tiwari by over 34,000 votes, a senior official said.

"Giri won by a margin of 34,298 votes. He received 1,24,810 votes and Tiwari got 90,512 votes," the official said.