1. Electronic voting machines are vulnerable to hacking and manipulation which could alter election outcomes without detection. There is no reliable way to audit paperless electronic voting systems.
2. Electronic voting machines have inherent technical glitches and errors that can cause votes to be lost or miscounted. This introduces an unacceptable margin of error.
3. The software that runs electronic voting machines is proprietary in many cases, meaning the code is hidden from public scrutiny. This lack of transparency undermines the integrity of the voting process.