Pardon my use of AI (Perplexity) in formulating this response.
Blockchain does not dispel concerns that online voting is inherently insecure; security experts conclude it fails to solve the fundamental problems and can even make them worse.

Why blockchain doesn't fix online voting security

End-to-end security: Blockchain secures the ledger, but not the voter's device. If malware alters your vote before it's submitted (e.g., changes R→D), the blockchain records the tampered vote correctly

Undetectable fraud: Attacks can silently modify or discard votes at the device/network level, making fraud virtually undetectable and uncorrectable after the election

Voter identity/authentication: Blockchain doesn't solve secure identity verification; bad ID photos and weak authentication remain vulnerable

Voter privacy/coercion: Blockchain's transparency can enable vote-buying: software can mathematically prove which candidate you voted for, undermining the secret ballot

Denial-of-service: Networks remain vulnerable to DoS attacks that could block eligible voters

Vendor opacity: Many blockchain voting vendors (like West Virginia's) keep cryptographic protocols secret, preventing independent security audits

Expert consensus

• MIT researchers: Blockchain voting would greatly increase the risk of undetectable, nation-scale election failures
• US Vote Foundation: Blockchain voting is an "imminent threat to democracy" and no more secure than regular web-based voting
• The Conversation: Blockchains won't fix internet voting security and could make it worse
• Scientific American: Blockchains are probably not the answer for secure elections

The bottom line: blockchain addresses ledger integrity but cannot secure the voter's device, network, or identity—the actual weak points that make online voting inherently insecure.