Improper voter-roll purges

Improper voter-roll purges are voter-roll maintenance practices that produce the disenfranchisement of eligible voters — through aggressive "inactive voter" removals, error-prone matching against other state databases, the elimination of voters based on unverified third-party challenges, or the use of cross-state matching tools known to produce high false-positive rates. Routine, evidence-based list maintenance is required by law; the abuse is maintenance that removes eligible voters at scale, particularly when the affected populations correlate with specific demographics.