Lately, I've noticed elected officials have become less responsive to constituent input. If you write to them, typically you won't even get a letter back.
I find it annoying, since we pay them and their staff some good money to represent us, yet they often don't seem very representative. One political issue I care about, for instance, is cannabis legalization. The theory behind a republic is that we need elected officials to look at the evidence and be smarter than the average joe; yet I think I'm smarter on the topic of pot legalization than a lot of the people representing me. Their decisions are being driven, anyway, by whoever in their base is the most vocal on a given issue, and willing to vote based on it.
But what am I really going to do about it? If a Libertarian runs in my district, maybe I'll vote for him, but that probably won't happen; I'll be stuck voting for either the (D) or the (R), or writing someone in.
A good system for this type of situation is delegative democracy, where you can pick whomever you want to cast votes on your behalf on legislation. So, let's say I and 999 other people pick a Libertarian to represent us; he'll then be casting 1,000 votes in favor of pot legalization if it comes up for a vote in the legislature. https://en.wikipedia.org/wiki/Delegative_democracy
Of course, some would argue that we would be better off with a monarchy, or aristocracy, or neocameralism, or anarcho-capitalism. Those systems have benefits too, but a lot of them have an element of delegative democracy anyway. E.g., in the corporate world, people select proxies rather than showing up to vote at the annual meeting in person.
We're probably not going to switch to any of those systems any time soon, but delegative democracy is a heck of a lot better than first-past-the-post, or instant-runoff voting, etc. if we want people to feel represented.(Sometimes what's more important than substantively good decisions is procedurally good decisions; i.e. making people feel like justice is done, even if they got fucked over.)