The phrase "a primary issue on" is correct and usable in written English.
It can be used when discussing a main concern or topic related to a specific subject or situation.
Example: "The report highlights a primary issue on climate change that needs immediate attention."
Alternatives: "a key concern regarding" or "a main topic about".
She is part of a broad spectrum of Democrats in Congress who support making hearings on war profiteering a primary issue in January, a promise made by Congressman Henry Waxman once he assumes his leadership of the Government Reform Committee.
Be realistic in how I priced our enterprise software solution, and think beyond price as the primary issue on the table and to include other value we could offer – such as payment plans, implementation consulting, and service packages.
The literature highlights two primary issues; one on the linguistic issues regarding comprehension and understanding of mental health constructs and one on the socio-cultural nature of mental health and how the symptoms may manifest differently in different societies [40] [41].
He also revealed that defence of civil liberties, more social housing, climate change and continued UK membership of the European Union will be the primary issues on which he first intends to define his leadership.
For Lopez, the primary issue is the effect on her low-income community, which has been hurt historically by the construction of three freeways, garbage dumps and other decisions by political power brokers in the state.
So far, none of the GOP presidential candidates has taken a position on the early primary issue, but two candidates, Jon Huntsman and Mitt Romney, are already looking to Florida as a major campaign springboard.
California's governor, Gray Davis, a Democrat who like Mr. Jones won with the help of voters outside his party, also broke with his party on the primary issue, saying that he would do "everything possible" to find a substitute blanket primary system.
Knowling called Americans for Job Security "a shadowy group backed by big corporate interests" that should be focusing on its primary issue -- jobs.
Hugunin said the union felt Hillary Clinton, the Democratic front-runner, wasn't as dependable on their primary issue.
The primary issue cited in these concerns centered on intellectual property (i.e., patent and freedom to operate issues).
