If the US had a single transferable vote system then you could comfortably vote for a third party, if you wanted to, without helping out the opponent you dislike the most.
You just rank the candidates, so you could rank Jill Stein as 1 if you want, then Harris as 2, and Trump below that. So then if Stein has fewer votes than Harris and Trump each have (likely) then her votes would transfer to whoever her voters ranked 2nd.
Under this system, a third party candidate is more likely to win (maybe you don't like Jill Stein, but conceivably a third party could produce a good candidate). The ballot under this system looks like this:
The first and strangest is the monotonicity criterion.
Ranked Choice is the only system that fails it. What it means is that you can actually improve a candidate's chance of winning by lowering their ranking on your ballot.
Oh yeah, it also still has the spoiler effect, where a third party can fuck over an election. It's just slightly harder to achieve. But the mechanism that forces two parties remains.
It's also hard to count and thus more susceptible to malicious actors.
Some of us have been screaming about these flaws for years.
There are better options. Approval is one. It's dead simple. The ballot instructions are as such. Do you approve of the candidate, mark yes or no next to any, all or none of the candidates listed.
Candidates with the highest approval win.
Approval is immune to the Spoiler effect. It would be a direct improvement vs anything being done in the world today.
And it's still not the best system out there.
That's likely to be STAR.
Immune to the Spoiler effect and also protected vs clone candidates and such, while allowing the voter to show clear preferences.
It also is constructed in such a way that it gets around some of those "one person one vote" laws put in place by the anti-voting reform people.
Approval voting absolutely sucks. Not for any mathematical reason, it may very well give us the best results mathematically, but for psychological reasons. If you give approval to both the safe (popular) candidate and your preferred one, then you won't feel you have expressed your preference once the popular candidate wins. If you only approve your preferred candidate and an opposing (very undesirable) candidate wins, you again regret not voting tactically. In either case, you justifiably have no confidence in the results.
Also, as a candidate, how do you get people to not mark other candidates in addition to you? The answer is you don't run on your own positions but attacking opponents. Not very healthy for democracy.
Australia had this, our parliament is full of complete assholes. The issue of candidates won't be fixed by preferential voting. We're the assholes.
On the plus side Stein is a miles better candidate then Trump and yet his polualty is ludicrious. You also can't make any changes if you keep doing the same thing and expecting a different outcome.
People at e bizzare, can't vite fkwr Stein bevoase of this and that but a tozic mile long laundry list of shit from other caduaudates is excused.
Hardest job in the workd is laughable, go pick strawberries in baking heat for a week, that's a hard.job.