Dimple Yadav is wife of Uttar Pradesh Chief Minister Akhilesh Yadav.
Dimple Yadav will contest the Kannauj Lok Sabha by election as a Samajwadi Party candidate.
Dimple had contested the Firozabad by-election in 2009, but lost to Congress candidate Raj Babbar.
Kannauj is considered a safer seat for the Yadav 'bahu'.
Dimple Yadav filed her nomination for the Kannauj Lok Sabha by-poll on Tuesday.
Dimple Yadav has assured the people that she would leave no stone unturned for the development of the constituency.