“What we found is charisma is composed of two elements,” says the paper’s lead author, Konstantin Tskhay, who now works as a consultant at Deloitte. “One relates to influence, or the ability to guide others, and the other to affability, or making other people feel comfortable and at ease.” ...Political success is measured by an ability to build and sustain coalitions. This usually means issuing more than one message on any issue to more than one potential constituency -- and worrying less about inconsistencies. It means getting away with it: doing so without being thought of as duplicitous. It means sticking to the bland and crowd-tested cliches -- and getting away with it. FDR and LBJ managed to build and sustained coalitions. All political actors carefully hone their approach and their rhetoric. But are they a turn-off or a turn-on? Ask Hillary Clinton.
Many people (here and abroad) were dazzled by (fell in love with) the charismatic Barack Obama. Many still like Bill Clinton. Infatuations are funny. Our natural BS detectors go limp for a while.
My guess is that the jury is no longer out on Donald Trump; his approval ratings appear to be stuck below 40%. Not a sign of successful coalition building -- or of charisma as the cited authors define it. His efforts, just feeding red meat to the true believers, are not adequate.