Having worked for an election services company, it truly irked me every time "blockchain" was mentioned to solve X problems. Unless you're in an untrusted, adversarial context with multiple parties, blockchain gets you nothing over just regular data signing with public-private keys/certs, but the added problems of latency and compute costs.
This is true of most regulatory situations. Blockchain could be something the banks and federal reserve could use for exchanges instead of the existing networks, but that's a very different use case.