When it comes to popular elections, it is very important that the system be something well-understood and trusted by the public — so quadratic voting is *not* the right method to elect the representatives. But there are other applications where it would be useful, such as setting priorities among 41 equals.
Colorado Tried a New Way to Vote: Make People Pay—Quadratically | WIRED
https://www.wired.com/story/colorado-quadratic-voting-experiment/