Two choices selected by private parties is not enough. We don't need a perfect candidate, but you're less likely to pick a horrible candidate if you have a wider selection to choose from.
This is a BS argument. there were literally 17 separate candidates running for the republican slot.
17!
and an additional 5 on the democratic side, though admittedly 2 of those were never viable.
an additional third party candidate or three would not have changed the outcome at all, nor would it have provided significantly more choice than already existed.
It's down to "two candidates" but those were selected by voters, not "private parties." eventually it will be down to "one candidate" selected by those voters, whether you start with 22 candidates or 100. given the nature of finding one man or woman to represent 330 million people or so, there are always going to be an asshurt minority complaining that their views werent adequately represented.
tough shit, that's called compromise.