single transferable vote
noun /ˌsɪŋɡl trænsˌfɜːrəbl ˈvəʊt/
/ˌsɪŋɡl trænsˌfɜːrəbl ˈvəʊt/
[singular] (politics)- a system for electing representatives in which a person’s vote can be given to their second or third choice if their first choice is defeated, or if their first choice wins with more votes than they need