It's quite possible it's too late for the usa, but I still do want other democracies to push for it. Only 4 odd countries have it worldwide.

Worth saying, while grassroots is less common, it is not gone. Kat in il-9 is somewhat a good example of this though she failed community engagement and came from out of town so she's unlikely to win. Though it is arguable how grassroots she is. Of course the top priority is revoking citizens united.

It's one of the simplest ways of helping push countries to the left, because it allows you to have people vote for the leftist politicians without worrying about boosting a right wing politician or party, as first past the post forces, and also not forcing people to vote for parties, which lock out leftist candidates from being able to gain traction as easily such as in proportional voting systems.