Mr Singh's wife Swati Singh, who is also the head of the BJP women's wing, won the assembly polls from the Sarojini Nagar seat of Lucknow yesterday. Mrs Singh was given the key party post weeks after her husband's expulsion. She had caught the attention of the party after she led a campaign demanding FIRs against BSP leaders who raised slogans targeting her minor daughter.
"Suspension of Dayashankar Singh has been revoked by party state president Keshav Prasad Maurya," news agency Press Trust of India quoted party spokesman Harish Chandra Srivastava as saying.
A police case had been filed against Mr Singh following his alleged remarks against Ms Mayawati and he was arrested. Out on bail last August, he targetted the BSP chief again, saying she "auctioned" her tickets for the assembly elections.
He even demanded that a CBI inquiry be ordered into the accsation of party ticket auction, threatening he would go to court otherwise.
Get the latest election news, live updates and election schedule for Lok Sabha Elections 2019 on ndtv.com/elections. Like us on Facebook or follow us on Twitter and Instagram for updates from each of the 543 parliamentary seats for the 2019 Indian general elections.