End-to-End Encryption (E2EE) in blockchain-based voting systems ensures that all voter data, including ballots, is encrypted from the moment it is collected until the final tally is completed. This feature is crucial for maintaining the privacy and security of sensitive voter information, preventing unauthorized access and ensuring that votes cannot be tampered with during transmission or storage. By utilizing advanced cryptographic techniques, E2EE guarantees that only authorized parties can access the data, thereby fostering trust in the electoral process.