so blockchain says it has these advantages:

1. safety and transparency. nobody can forge any fake transaction.
2. anonymous. person identity is protected.
3. user controlled network. no centralized controls to abuse the result.

so why can't a blockchain system be created and give every voter and candidate one wallet. voter wallet will receive 1 coin. candidate wallet 0 coin. voters send their coin to their intended candidate on election day. all political parties and interested voters can run their own mining software to process the payment transactions.

at end of the day, count the coins in candidate wallet. the candidate with most coins win.