The phrase "substantial representation" is correct and can be used in written English.
It refers to a significant or notable portrayal or expression of something. Example: "The author's use of vivid imagery and symbolic characters is a substantial representation of the themes of love and loss in the novel."
City officials are likely to assume more substantial representation.
But there is also substantial representation by the Dawa Movement and the Islamic Supreme Council of Iraq.
Labour is a unionist party – the only major party with substantial representation in Scotland, Wales and England.
Political parties were required by law to alternate men and women on electoral lists, ensuring substantial representation in parliament.
Even gobs of salt didn't give much life to a capellini gamberetti ($14) entree with a substantial representation of baby shrimp but only a hint of garlic.
Given the substantial representation of Jews in intellectual life, it's not surprising that major book-review sections feature plenty of recognizably Jewish names.
Substantial representations of unambiguously gay characters were rare on film before the 1980s.
Collections of land plants include major collections from the Pacific Rim, with substantial representations from California, northern Mexico and Baja California, the southwestern deserts, and the Andes.
Those galleries include works in abundance by Cézanne, Renoir, Matisse, and Picasso, and substantial representations of Tintoretto, El Greco, Goya, Courbet, Manet, Monet, Toulouse-Lautrec, van Gogh, Seurat, Rousseau, Modigliani, Soutine, and de Chirico.
We have representation across Asian American, and Pacific Islanders both in our programming but also in our steering committee; and then as in previous years, substantial-representation across the African and African American Diaspora, and LatinX communities.
Branches in Algeria, Bahrain, Kuwait and Yemen have maintained substantial parliamentary representation since the 1990s.
