"Charles III has two shadows around him: William, his son, with 66%

popularity, and Elizabeth II, who came to pass away with 75% popularity."

To increase his charisma, "Charles III needs to approach people," according to the expert.

"This popularity problem may worsen in a context of severe economic crisis. 

The skeptics of the monarchy can take advantage

of this moment to advance the republican agenda," he said.

In the professor's opinion, the United Kingdom's Prime Minister, Liz Truss, also needs to

"present a speech that sensitizes the population," since she faces skepticism from her own party.