- Russia had real elections for a while, but got rid of term limits and now seems to have a president for life.
- China now has a premier for life.
- Israel seems to now have a premier for life. (15 years and counting, despite some short gaps)
- The US has Trump.
- India has become an "electoral autocracy".
A common factor is dysfunctional legislatures/parliaments. This leads to the executive taking over more legislative power. Then a "strongman" emerges. Then the legislative branch becomes irrelevant.
It's also a common factor that the current crop of autocratic national leaders are under-performers. There's not an Eisenhower, a Ben-Gurion, a de Gaulle or an Ataturk in the bunch. Let alone a Roosevelt or a Churchill.
[1] https://freedomhouse.org/issues/democracies-decline
[2] https://www.reuters.com/world/half-worlds-democracies-declin...