It's still the same fundamental selection method, though. It's less bad if elections are staggered, but it's still skewed by the the same forces - for instance

It's still the same fundamental selection method, though. It's less bad if elections are staggered, but it's still skewed by the the same forces - for instance, public opinion can be consistently wrong about a lot of things. A purely random selection process would be better, but I've got no idea how that would work in practice.