A greater number of countries are sliding towards authoritarianism, while the number of established democracies under threat has never been so high, the International Institute for Democracy and Electoral Assistance (IDEA) said on Monday.

Populist politics, the use of Covid-19 pandemic restrictions to silence critics, a tendency of countries to mimic the anti-democratic behaviour of others, and disinformation used to divide societies are mainly to blame, the Stockholm-based intergovernmental organisation said in a report.

"More countries than ever are suffering from...