Who can be trusted to hold the wallets? The candidates holding it
That was my idea, on live TV, so we can see their faces as their balance goes up 
Brilliant idea I should say. Wallets can be hold by Autonomous Agents . DAG excludes middlemen ( miners) thereby it would be more appropriate for voting system though Charles Hoskinson is confident elections will use Cardano's solution in 10 years. They work intensively in this direction.