Leadership is commonly associated with being charismatic. And, in turn, charisma is often said to stem from being a great leader.
It has been shown that people of all cultures and backgrounds feel that charisma and leadership share parts of their definition. They’re not mutually exclusive, yet they depend on each other.
We also know that charisma is coded into speech. In a linguistic context, this means that leadership potential should be observable/quantifiable from a person’s voice.
We have yet to see whether this could be a potential area for training, to teach others to be better leaders through the way they speak, both in content and form (see also rhetoric).