Charismatic people speak emotionally about putting themselves on the line. They connect with others hearts as well as their minds. They are empathetic. Empathetic people are able to see things from another person's perspective. With the exception of severely disturbed sociopathic individuals, most everyone can develop some empathy for others.
Charismatic leaders push.
Charismatic leaders follow a set of principles that direct them to what they believe is right, and they challenge and provoke others. Charisma can be a positive or negative force. Pat Buchanan, a 1996 GOP contender, had the absolute conviction of his beliefs, even though these beliefs changed daily. Charlie Manson and Adolf Hitler, both charismatic leaders, had absolute conviction of their beliefs. So did Martin Luther King and Ghandi.