Quote from: Miestră Schivă, UrN-GC on Yesterday at 05:55:36 PMQuote from: Baron Alexandreu Davinescu on Yesterday at 04:44:12 PMlet's say that Party A won 50%, Party B won 25%, and Party C won 25%. In a 20-seat Cosa, that's 10 seats for A, 5 seats for B, and 5 seats for C. But if B won six of the provincial seats, then they'd have 30% (more than their share of the national vote) and so A and B would need extra until things were proportional.
You could do it that way, but that's the harder way. The simpler option would be to just live with the overhang. Let's say A and C both won 1 province. Then, Party A gets 9 party list seats (to sum up to 10) and Party C gets 4 seats (to sum up to 5). So that's a total Cosa of 21 seats. Party B gets a small bonus.
Yeah, that's the original MMP system that is still in use in New Zealand. What AD mentioned are called compensatory seats and Germany moved to a system with compensatory seats because the Constitutional Court ruled that the old system was unconstitutionally disproportional (mainly Bavaria's fault), which in turn lead to ever bigger parliament sizes... the system we use now caps parliament size at 630, and abolishes overhang seats entirely: now, if a party wins more constituencies than their party vote would justify, the candidates that won by the narrowest margin simply don't get in, meaning some constitutuencies (IIRC again mainly Bavarian ones) not having a local representative.
