The dude who owns the election server won’t be able to manipulate results in any way.
Sure he will. He can just ignore votes for one candidate and not add them to the chain. Blockchains are only resistant to manipulation if they’re distributed and people agree on the canonical version. Even then if enough people agree to manipulate them they can, like they did with Ethereum.
Who decides to commit changes though? A human. A human who can be corrupt.
The best use case for blockchains in my opinion is elections. The dude who owns the election server won’t be able to manipulate results in any way.
While manipulating results isn’t impossible in case of a blockchain, it is still very very difficult.
Sure he will. He can just ignore votes for one candidate and not add them to the chain. Blockchains are only resistant to manipulation if they’re distributed and people agree on the canonical version. Even then if enough people agree to manipulate them they can, like they did with Ethereum.