A preprint on arXiv investigates a core design question for electoral systems: does the number of seats in a multimember district change how proportionally parties are represented? The paper, titled "District Size Matters: How Seats Per District Shapes Proportionality Under STV," applies Single Transferable Vote (STV) as the winner-selection method and examines its effect on partisan proportionality.
The authors start with detailed case studies of upper legislative houses, though the abstract cuts off before describing their findings or methodology in full. The stated focus is clear: district magnitude—the number of seats per district—is treated as a key variable that can shape how closely election outcomes match party vote shares.
As a preprint, the work has not yet undergone peer review, and the available abstract limits what can be said about the conclusions. Still, the research points to a practical consideration for jurisdictions using or considering STV: the choice of district size is not neutral, and it may have measurable consequences for proportionality.