I believe that Approval Voting is the single greatest alteration to our political system that would solve a lot of our problems:
What is Approval Voting
Approval Voting is a voting system where you can support one or more candidates instead of only supporting a single candidate. it removes the need for Partisan Primaries and allows for us to elect congressional representation with a single general election. While this might seem like a minor change it would solve a lot of problems.
Problems Solved by Removing Primaries With Approval Voting
Why Approval Voting is the Best
There are other voting methods that are inferior to Approval Voting for a variety of reasons:
all of these popular ideas sound good in theory but actually don't work well at all.