REVISOR is a neural network-based software package for calculating actual voter numbers and monitoring the compliance of election procedures. It enables fast, reliable, and affordable election monitoring that covers all polling stations. REVISOR leverages neural networks to identify objects, track movement, detect voting events, and differentiate them from other activities. This allows it to independently calculate voter numbers with high accuracy (up to 98% accuracy). The system can be applied to different types of voting procedures, elections, and national election systems.