The phrase "a pivotal theme" is correct and usable in written English.
It can be used to describe a central or crucial idea in a discussion, analysis, or narrative.
Example: "In the novel, the struggle for identity is a pivotal theme that resonates with readers."
Alternatives: "a central theme" or "a key theme".
But Obama's embrace of what he calls "middle-class economics" – as opposed to the trickle-down economics of the Republicans – is likely to ensure that inequality remains a pivotal theme of the 2016 presidential campaign.
In announcing his proposals, Mr. Clinton returned to a pivotal theme of his career, an issue on which he won the presidency in 1992 and then ran aground two years later.
A pivotal theme in current Islamic political discourse is a demand for justice, a key tenet of the Quran.
A third pivotal theme pertains to accessible technology and communications during disaster.
A second pivotal theme regards the emphasis placed on inclusivity of disaster preparedness, response, and mitigation activities.
A final pivotal theme pertains to the essential role of individuals with disabilities and disability advocacy organizations as stakeholders and collaborators in emergency planning and recovery.
Although delay was the pivotal theme that emerged from our interviews (and was corroborated in the focus groups), the methodological design meant that only people who actually sought treatment resulting in an x-ray were eligible to participate.
Pritchard points to a pivotal time in the theme park's history as a game changer for his website.
Phill points to a pivotal time in the theme park's history as a game changer for his website.
"We touched on some of the more pivotal themes and ideas, the structure of the storyline, the characters, the Upside-Down, and the entity monster," added Stein.
Two major exhibitions explore pivotal themes in his long and varied career, and the French tourist office is suggesting a 10-stop self-guided Picasso tour from Antibes, the location of the enchanting Musée Picasso, to Avignon, which Picasso first visited in 1912 with his fellow painter Georges Braque.
