That’s the problem. You can elect any representative but you can’t ensure its a good one if the voters themselves are the choke-point, maybe you decide not to vote, vote based on trends, vote in panic or vote for some ideology rather than what should really matter to everyone in a long term.
I wonder how is US a true democracy. Its a two-party system, you can argue its better than China’s one-party system or Democratic People’s Republic of Korea (ahem!) but that’s all there is to it.
Freedom of speech, rationality, pragmatism to name a few. What else, lolz!