It is similar to the Irish single transferable vote if we have a preferential vote both for parties and for individual candidates. It is possible to vote only for parties. The objection some politician friends made to me is that the Irish single transferable vote may lead several candidates from the same party to campaign against each other. That may be good, but perhaps parties would rather avoid that.
So the idea is to figure out a vote in which the candidates cannot campaign against each other within the same party, but we can still apply the transferable vote to the choices between parties. My preference is a simplified Irish single transferable vote, with less competition between the candidates from the same party and a less complicated way of calculating results. In my little book, I explain this more fully than I am able to do now.