"broad readership" is correct and usable in written English.
You can use it to refer to a large amount of readers. For example: The book has achieved a broad readership, making it a bestseller.
David Wilkerson was known to a broad readership through his many books.
Moderate to conservative throughout its history, Berlingske appeals to a broad readership.
Yet some critics have homed in on the very qualities that have helped "Night" find a broad readership.
Westchester's Latino population is far from homogenous, which can make producing a newspaper that appeals to a broad readership difficult.
His historical novels, which ranged from portraits of slave revolts in antiquity, as with Spartacus (1953), to the American revolution, won him a broad readership across the world.
The main criteria are that they should be of immediate interest to a broad readership and should be written in an accessible, non-technical style.
With such a broad readership it was inevitably Amichai's fate to become, in his lifetime, a poet of occasions, although his writing is not the least bit occasional.
Throughout, he speaks to a broad readership, and his focus on freedom and social justice will interest scholars and activists alike.
Studies of media attention and framing re- quire sophisticated analytic tools to permit analysis of a large volume of content consumed by a broad readership.
This paper is of interest to a broad readership for those interested in automation in reinforced concrete construction involving durability design & engineering related to corrosion of steel in concrete, corrosion resistant construction technology, corrosion maintenance & management.
Contributions should be of marked novelty and interest for a broad readership.
