Sahay went to the gurudwara to seek blessings and was greeted by the Gurudwara Management Committee members, including Paramjeet Singh Chana, Guruvinder Singh Sethi, Gagandeep Sethi.
"The AICC had yesterday announced his candidature, and we are going to speed up our campaigning and we are confident to retain the seat," PCC spokesman Sailesh Sinha claimed before reporters here.
The bypoll for Hatia was necessitated following the death of Congress MLA Gopal Sharan Nath Sahdeo in 2010.
The ruling BJP has fielded former minister Ramjilal Sharda, party spokesman Pradip Sinha said.
Its junior ally AJSU has fielded Naveen Jaiswal.
Hatia is one of the 27 assembly constituencies across the country going for bypoll with the Election Commission deciding to issue notification on May 18.
The last date of filing nominations is scheduled on May 25 while the scrutiny will take place the next day and the last date for withdrawal of candidature is on May 28.