The 41-year-old former prime ministerial adviser, whose family has a long political legacy in India, won a seat for the Green Party in Stockholm.
The political group has given the exam commission's chairman and secretary until September 24 to step down over alleged paper leaks.
The activist claims ruling party infiltrators plan to target him during the march scheduled to coincide with Ganpati festivities.
The prominent analyst and politician, who was imprisoned during the Emergency, passed away at his Pune residence after a brief illness.
