Those that do so are no longer "liberal democracies". They are authoritarian or totalitarian leaning autocracies.
They're all leftist oligarchies now. The next step is communism (or Islamism for some countries like the UK).
Right now the U.S. is ruled under a leftist oligarchy. Joe Biden (or Kamala Harris is a figurehead)
Argentina was ruled under a leftist oligarchy for nearly 100 years aka Peronism. That is our likely destination.