I want to know the answer to the following question:
Why does the government prevent more than 63% of a party to control the legislature?
All the background I'm provided with is that "Even though proportionality is confined to the proportional seats to prevent a part from being overrepresented, several restrictions apply in the assignation of the seats; namely, that no party can have more than 63% of all seats, both uninominal and plurinominal.". Is that enough to answer the question?