Comment Re:Who cares? (Score 1) 54
Primaries help but they aren't a complete solution. First, primary results can be overridden by the party leadership. It's best to think of primaries as a non-binding poll of the electorate. This alone makes primaries a pretty unreliable way to filter candidates.
Second, some states allow voting in either party's primary; there's no declaration of party affiliation and no check to make sure you're a member of the party whose ballot you're marking. So if your own party's nomination is pretty much settled, why not just vote in the other party's primary and pick the least electable candidate? See if you can trick the other party into running an absolute idiot that your guy can easily defeat.
Third, the losers of the primary can still decide to run in the general election under a different party or as an independent. In my example, Lion wins the primary so Tiger runs as neither herbivore or carnivore, but switches to the omnivore party or runs as an independent. This is still going to leech votes away from Lion and put us back in the situation of the minority candidate being elected.
Finally, the biggest advantage that ranked choice voting has that primaries can never have is that it encourages third-party candidates. First past the post almost inevitably devolves into what we have now, two equal parties full of voters who aren't voting *for* their own candidate as much as they are voting *against* the other one. In a close race between two big parties, voting for a third-party is very much not in your best interest. It makes it more likely for your *least* favorite candidate to win. Primaries can't fix that, it's inherent in first past the post voting. Ranked choice voting can bring in third parties as it lets you vote for them without fear of helping the candidate you least like. And who knows? Maybe there are enough others who are voting strategically to keep one party out of office who, if they could actually vote for the party they *like* for a change, could get one of the third-parties elected.