The phrase "able to exercise significant influence" is correct and usable in written English.
It can be used in contexts where you want to describe the capacity to affect decisions or outcomes, often in business or governance discussions.
Example: "The board members are able to exercise significant influence over the company's strategic direction."
Alternatives: "capable of exerting considerable influence" or "able to have a major impact".
He said penalties are imposed only when it can be shown that the transactions provided a significant private benefit to someone "able to exercise substantial influence" over a charity.
In the dominant position he subsequently gained, with four major newspapers and a large stake in television, he began to exercise significant influence over the political scene, and even greater influence on the down-market end of the press.
Justice Thomas acknowledged that the plaintiffs "persuasively argue that investment advisers exercise significant influence over their client funds".
Holbrooke was able to exercise direct influence only on the White House.
But it is unclear whether Mr. Mineta, an informal adviser to Mr. Gore in the presidential campaign, will be able to exercise much influence beyond the Transportation Department.
"The social media reach is at its height for ISIS," Raj said, explaining how the Islamic State was able to exercise such influence among the radical minority of Malaysians.
But when television replaced print, there was kind of a "re-feudalization" of political power -- because those with a lot of money were able to exercise enormous influence in the political system.
Politically, the Viet Cong 261st and 514th Battalions were able to exercise greater influence in their areas of operations because of the prestige of defeating the soldiers of Diem's unpopular regime.
Despite having little power to shape the formal organizational structure or environmental conditions of their work place, providers were thus able to exercise considerable influence over service quality and responsiveness via work norms that constituted a source of 'hidden' power.
"Under existing law, the investment adviser is able to exercise a pervasive influence over the board".
