6/25/2020
Details of 1999 (Gyo-Tsu) 35 | Judgments of the Supreme Court
is given representative rights disproportionate to the numbers of
population or voters. Such an explicit provision does not exist in our
Constitution, and it is after all impossible to conclude that a system of
election which is against the equality principle would be allowed
based upon the argument that the designing of an election system
based upon the prefectural system is within the scope of discretion
by the Diet.
Thirdly, there is a view that since in local assemblies, due to the
unique character of local autonomy, there are some limited cases
where the equality principle is applied in a slightly relaxed way, the
same should apply to the Diet. It is obvious that this view is
incompatible with the provision of the Constitution which provides
that the Diet is the supreme organ of the nation which is composed of
members who represent the people as a whole and not a specific
region.
6. Japan had maintained a high economic growth for many years and
was able to cope with various problems without solving fundamental
contradictions within the system. However, the time of such laxity is
gone and we are confronted with totally new significant tasks. In
order to deal with new and significant problems within and outside
Japan in a correct way in such a harsh environment, the existence of
a legislature which correctly reflects the will of the people, i.e. the
Diet which is composed of members elected by a system which
strictly complies with the equality principle as provided by the
Constitution, has gained even more significance than in the past.
Naturally, policies chosen by the members of the Diet are not always
the best, difficulties are not always foreseen and errors emerge from
time to time. However, the strength of the representative democracy
is that if the views of the voters change, it is likely to be reflected in a
policy change through the election of the members of the Diet. If
voters think that policies chosen by the members of the Diet for
whom they voted in the previous election are no longer the best, they
may easily change their voting attitude. Members of the Diet are fully
aware of this, and make efforts to promote policies which are chosen
by the majority of the voters. In other words, the basis of the
representative democracy is to enable the correct choice of policies
which are supported by a greater number of voters by replacing
members of the Diet by election or by influencing their political views.
Even when a representative democracy is adopted, if the value of the
votes of voters is not equal, the Diet which is composed of members
elected by such a system will have a distorted structure which does
not correctly reflect the will of the people at the time of the election.
In such cases, a possibility that decisions adopted by a majority vote
in the Diet does not reflect the will of the majority of the people
emerges, and there is a possibility that the response to the problems
within and outside Japan may be erroneous. Representative
democracy aimed at by the Constitution is not like this. Elections
based upon unequal value of votes are not only against the
Constitution, but risk arousing the distrust of the people in politics,
thus causing political apathy.
7. The primary responsibility of demarcating constituency boundaries
in strict accordance with the equality principle, of course, lies with the
Diet. However, members comprising the Diet have been elected by
the existing election system, and therefore, tend to be overcautious
when reform of the election system is at issue. For this reason, even if
the system of election leads to inequality in the value of votes,
sufficient eagerness to change the system tends to be lacking. Under
the system of rules based upon the separation of powers, the
responsibility of rectifying the situation also lies with the
administration and the judiciary. When the judiciary is given the
power of judicial review, the role of the judiciary will be extremely
important. This should be particularly acknowledged under a system
in which the administration is inclined to be influenced by the Diet;
furthermore, under the system of Dietary government, in contrast with
the presidential system, where the head of the administration is
elected by a separate election, there is an inherent limit to the
possibility of expressing views on matters such as the demarcation of
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