If a 2009 by-election ensured the defeat of Dimple Yadav and sent the relations between Congress and Samajwadi Party (SP) hurtling down, another such contest is being seen to resurrect the ties. Congress has decided against fielding candidate against wife of UP CM Akhilesh Yadav, Dimple, who on Tuesday filed the nomination from Kannauj Lok Sabha seat vacated by her husband.