The 62-year-old BJP MP from Nawada had caused some embarassment to the party during the campaign for Lok Sabha polls when he suggested that Muslims unhappy with Modi should go to Pakistan, forcing the party's prime ministerial candidate to issue a rebuke.
But Singh, a first time MP, is also one of the early Modi loyalists in the party and often took on the then Bihar Chief Minister Nitish Kumar over his antipathy towards Modi despite being a member of Kumar's cabinet.
When reports were rife that Singh was unhappy over his candidature from Nawada instead of Begusarai, which was considered a safer seat for BJP, Modi held a rally in the constituency and embraced him at dais while telling the crowd that he was his man to serve Nawada.
The first-time MP, he was earlier a Legislative Council member in Bihar, has special interest in agricultural practices and animal husbandry.