Samajwadi Party President Mulayam Singh Yadav's daughter-in-law Dimple Yadav today filed her nomination papers for the by-election to Firozabad Lok Sabha seat slated for November seven.
 
Dimple, a first-timer, was accompanied by senior party leader Amar Singh, district unit president of the party Azim Bhai and her husband Akhilesh Yadav.  

Bypoll to the seat was necessitated after Akhilesh Yadav, who had won both Firozabad and Kannauj seats in the Lok Sabha elections resigned from the former seat.