Mixed ballot transferable vote

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The mixed ballot transferable vote (MBTV) refers to a type of vote linkage-based mixed-member electoral system where a group of members are elected on local (lower) tier, for example in single-member districts (SMDs). Other members are elected on a compensatory national (upper) tier from a list and voters cast a single ballot where they may indicate their preferences separately.^[1]

This article is primarily about systems using mixed ballots, for the dual vote, hybrid versions of parallel voting and MSV used in Hungary and formerly used in Italy for national elections see Scorporo.^[2]