The phrase "able to influence a" is correct and usable in written English.
It can be used when discussing someone's capacity or capability to affect something or someone in a particular context.
Example: "The researcher was able to influence a significant change in public policy through her findings."
Alternatives: "capable of affecting a" or "has the power to sway a".
However, the Met's actions have been defended by the Association of Chief Police Officers, who insisted that no one, regardless of their position, should be able to influence a police inquiry.
We've bought our family home there, our children are at school there, I've planted trees, it is where I'm staying, and I'm angry that, never again, will I be able to influence a general election outcome.
I appreciate that as a private club it has a prerogative to decide, and am certain that I wouldn't be able to influence a clearly outdated organization to change its views.
However, he believes ACOs may be able to influence a hospital's quality of delivered care and the cost of that care.
18 20 However, it remains to be seen whether the belated introduction of such advice will be able to influence a more standardised and coherent approach in developing and managing AP roles.
(b) The absolute scores both groups was highest on variables that measured feelings of not being able to influence a work situation characterised by great demands and insufficient resources.
In short, an acceptable control mechanism should be able to influence in a predictable way (at least stochastically) the coevolution of the adaptive network.
By joining the Conservative Disability Group he had hoped to "be able to influence policy a little bit for the greater good.
Nearly everything is stocked these days, particularly in the large chains, but maybe the judges will be able to influence how a book is displayed.
How is the city viewed in the low carbon transition: as an actor able to influence developments, as a niche in which innovations contributing to transitions can be tried and tested or as a regime that forms the constraining context for transformations?
The right eigenvector of a person would be high if he or she is able to influence someone who already influences a great amount of people.
