California has a top-two primary system, not IRV, which as far as I can tell is the same as the "two-round system" you link to. So the primary is a free-for-all

California has a top-two primary system, not IRV, which as far as I can tell is the same as the "two-round system" you link to. So the primary is a free-for-all and the actual election has the top two polling candidates from the primaries, regardless of party affiliation. This was sold as a way of breaking the two-party duopoly, which it did, but not in the expected way. Instead of getting third parties or independents into that second spot, in heavily blue areas like SF they instead typically get the democratic vote split among two candidates, who go on to compete against each other in the general election. So now instead of third parties being locked by the mechanics of FPTP voting, they get third parties and republicans locked out! Went from a duopoly to a monopoly. (E.g. the last senate election in California was between Dianne Feinstein and Kevin de León, both establishment dems. Nancy Pelosi also faced a democrat in 2020.)