please explain me ... what's the meaning of lack of internal democracy in this paragraph !!?

Dear Student,

It means that  democracy is not found within the party.all the powers are concentrated in party high command and other  important leaders. it is a challenge because many people in the political party just want to earn money and power. and it is very difficult to change their mindsets and even without them the political parties would not be able to run because they provide financial support to the party.Therefore maintaining internal democracy is a challenge.

Regards....