NEW DELHI, Sept. 28 -- Opposition parties will meet in New Delhi on Wednesday to decide their strategy on the recent controversy over Chief Election Commissioner Gyanesh Kumar and the conduct of the special intensive revision (SIR) of electoral rolls across the country, despite dissent within the body. Among the steps that they will discuss is a plan to move another impeachment motion against Kumar. As demands for action against Kumar grow, here is an explainer on the constitutional mechanics, vote thresholds, and legal requirements needed to remove a Chief Election Commissioner in India.

Certain constitutional positions are granted a high degree of protection to safeguard them from political pressure or interference by the legislature a...