This analysis of electoral data from the Karnataka Chief Electoral Officer’s website and the single-person household estimates from the Centre for Research and Debates in Development Policy, New Delhi shows that nearly one quarter of Muslim adults in Karnataka were out of the electoral rolls. Overall, about 15% of all adults were not listed in the voter lists in Karnataka. Evidence of non-listing of Muslim electorate in large proportions is found in other states as well. The lack of consistent efforts to enroll all eligible adults by the electoral institutional structures enables political parties to achieve undemocratic and unethical goals.