The phrase "a wide segment of" is correct and usable in written English.
It can be used to refer to a large portion or group of people, ideas, or things within a particular context.
Example: "A wide segment of the population supports the new policy aimed at improving public transportation."
Alternatives: "a large portion of" or "a significant part of".
"Opportunities exist to press the issue with the Vatican, and in turn to influence a wide segment of the population in Europe and the developing world," says another.
Though the protests have since died down, the polling data released on Friday suggests the economic dissatisfaction that sparked them is shared among a wide segment of society.
Although judged to be the legitimate patriarch, he was repudiated by a wide segment of Alexandria's population who sympathized with the more uncompromising Monophysites.
In short, the obstruction here impaired or impeded an investigation of serious criminal conduct in circumstances that plainly led a wide segment of the public to view Mr. Lewis's conduct very negatively.
But over time, he has quietly burnished his origins with a sparkling, diverse résumé that should appeal to a wide segment of the electorate — Democrats, Republicans and independents alike.
The study showed that eliminating medicine fees, which were about 60 cents per patient, could be an effective way of substantially increasing health care access for a wide segment of the Malagasy population.
Larger parties tend to be centrist, needing to appeal to a wider segment of the population to earn votes — although it doesn't always work that way.
"We wanted to put it into a form that would appeal to a wider segment of the population," said Ibrahim Musawi, a spokesman for Manar and the director of its English news.
For business and the public, this translates to higher costs for transportation fuels and electricity derived from fossil fuels, with the downstream costs filtering to a wider segment of the province's economy than in Australia.
"The Society and Mr. Bernstein have programmed this series in the definite belief that music by the 'avant-garde' should be heard by a wider segment of the public," Moseley wrote.
Crowdfunding provides a platform to market your deals to a wider segment of the public.
