Kulkarni, the one time right hand of senior BJP leader LK Advani, appeared before a Delhi court seeking interim bail but was denied and sent to judicial custody.
Before his arrest, Kulkarni had stated, "I was only a whistle blower and my purpose was to expose the rampant corruption."
"There is no reason to deny interim bail to a person whose regular bail is pending (in the court) and who was not arrested during the investigation," hoped Kulkarni.
Many claim that Kulkarni has become the scapegoat over cash-for-votes scam which had rocked the Parliament ahead of the trust vote over Indo-US nuclear deal in 2008.
Other two BJP MPs were also arrested over their alleged roles in the cash for votes scam. Shielding the arrested MPs, another BJP leader, Arun Jaitley earlier had stated, "They have not done any wrong, they were only trying to expose a scam where money was being given either to abstain or vote during the trust vote motion against the UPA-I government in July 2008. If they had intended to keep the money with them why would they have gone to the floor of Parliament with the bribe amount."