Jurij wrote - Most of the countries draw districts according to the total "population".
Some draw them according to the "total number of voters" (for example England) but none does it according to the "votes cast". The reason is called "equal voting right principle". If the districts would be drawn according to the votes cast that would mean that people that do not vote would be underrepresented. However, they should not be underrepresented since they have a right to be represented equally, too. But it is their decision if they want to vote or not. Even if they do not vote, they should be equally represented. Therefore districts have to be drawn according to the total population. There is a difference between those that use the population principle and those that use number of voters. The idea of the first countries is that all the people have a voting right, but the minors etc. do not execute it yet. Or, some ideas say - all the people have the right to be equally represented, not just the voters. The second sort of countries say that minors do not have a voting right and do not have a right to be equally represented. Therefore, by your system, in any case the principle of "equal voting right" or principle of "equal representation" would be violated. ---- D- Again (for about the 15th time- a legislative body exists ONLY because ALL the Electors (and NOT the non-Electors in the population) cannot assemble in person and make the laws. Some *Non-Elector* groups --- aliens, children, disqualifed adult persons -- felons in jail or ex-felons (in many U.S.A. States) (who are obviously in concentrated areas), mentally ill persons, military persons in temporary bases in a State (who are obviously in concentrated areas), etc. That is, like it or not, the Electors are supposed to represent the Non-Electors. A remedy to represent all actual Electors is proxy p.r. --- each winner has a voting power equal to the final number of votes that he/she receives.