This whole way of thinking makes my skin crawl.
Just like sex, any kind of power exchange needs consent.
This whole idea that people are led or need to be led is wrong. Perhaps some people do but that's their problem, it shouldn't be mine. What politicians are is decision makers, not leaders.
We don't have time to vote on every single law personally, so we appoint temporary assistants who do it for us, based on our preferences. That's how it should work.
These assistants should work for us, not lead us. We should always have the power to override their decisions and to remove and replace them at any time. Of course, making this work in a practical manner, while satisfying constraints such as secrecy of votes, is difficult. I don't dispute that but we should be striving to find ways to get as close to this ideal as possible, not making politics into a career or treating it as a reality show.
And most certainly, these assistants ("leaders" as you call them) should not be picking their successors without our consent.