Singh, who was in the Atal Bihari Vajpayee cabinet, switched to Congress on the day after being denied ticket by the BJP. A former state minister, he will be contesting from Hoshangabad.
He was shunted out of the state cabinet in 2016 on the basis of the 75-plus age criteria.
The state goes to the polls to elect 230-member Assembly on November 28.
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