Shift uses DPoS (Delegated Proof of Stake), which means that only selected delegates can stack. There are 101 of them and they are elected democratically. They then receive a reward for stacking (1.1 SHIFT per block, ie about 2880 coins per day). The remuneration may be retained by the delegate or distributed to his constituents. Most delegates distribute the rewards. You can choose another Delegate at any time. The election round lasts 45 minutes, then the votes are recalculated. You can run for a fee of 60 SHIFT. It is not about the number of voting participants, but it mainly depends on how many coins you have in your wallet. The more coins, the more weight your vote has. The advantage is that you receive a reward for holding coins without having to actively stack (unless you become a delegate). However, you need to vote, so you have to study a little what and how ... And you also have to check once in a while if your Delegate is still among the TOP 101.