The phrase "a much broader constituency" is correct and usable in written English.
It can be used when referring to a larger or more diverse group of supporters or members in a particular context, such as politics, organizations, or social movements.
Example: "The new policy aims to attract a much broader constituency, including younger voters and marginalized communities."
Alternatives: "a significantly larger audience" or "a more extensive supporter base".
Soros said he hopes the money will cultivate a much broader constituency of foreign policymakers and philanthropists who embrace the notion that human rights should be observed universally.
"My role is to go after a much broader constituency -- those adults, but also kids, families, conventioneers, everyone," said Jeffrey Vasser, executive director of the authority.
Yet such rhetoric resonates with a much broader constituency than many believe, said Anthony Butler, professor of politics at the University of Cape Town.
Consequently, 10 years ago, the alliance skilfully placed hunting alongside wider concerns in the countryside to appeal to a much broader constituency.
But whereas that was based on economic anxieties alone, China-bashing enjoys a much broader constituency: moralistic neo-conservatives, who have objected to America's China policy since Nixon began "appeasement" in the 1970s; defence types, who fear China's arms build-up; fundamentalist Christians, angry about China's repressively atheist ways.
"There is a much broader constituency of people playing games," he said.
Over time, in the quest for acknowledgement as a leader not only of his own people but also of much broader constituencies, he has sought the mantle of pan-Arab champion and pan-African redeemer, often as not uninvited.
At the same time, CMOs work directly with a much broader set of internal constituencies, including the CIO, the CEO, and the board.
Japan's present mixture of proportional representation and single-seat constituencies demands politics with a much broader appeal, pitched more squarely at the urban consumer.
Painting Trump's policies as fundamentally opposed to the nation can bring together a much broader swath of the American public and appeal as well to the Trump constituency.
