I would bet big tent parties would adapt jungle primaries to suppress third parties. Interested candidates can build support within the party structure rather than build from scratch or at least from disadvantage outside. It wouldn't do away with them entirely, and would increase the ideological variation of elected officials- just within even bigger tent main parties.
Example for those who don't know what I'm talking about would be like California's current statewide primaries where you might have seven Democrats and five Republicans of various ideological stripes on the same ballot as the Green and Libertarian candidates. Only in this world, you'd rank preference rather than having a 2-round runoff.
Example for those who don't know what I'm talking about would be like California's current statewide primaries where you might have seven Democrats and five Republicans of various ideological stripes on the same ballot as the Green and Libertarian candidates. Only in this world, you'd rank preference rather than having a 2-round runoff.