The theory behind a democracy is that the public get to choose their leaders. If the theory has been adhered to — reflects the reality — then at least 50% of the public in such a country approve of their leader. Here are the actual latest polled approve-disapprove ratings of the national leaders of the U.S.-&-allied countries:
https://pro.morningconsult.com/trackers/global-leader-approval
issue-date 4 September 2023: https://archive.ph/wTWrz
Giorgia Meloni (Italy) 45% 50% (45% approve, 50% disapprove)
Pedro Sánchez (Spain) 44% 50%
Joe Biden (U.S.) 40% 53%
Leo Varadkar (Ireland) 39% 52%
Mateusz Morawiecki (Poland) 36% 57%
Alexander De Croo (Belgium) 35% 48%
Justin Trudeau (Canada) 35% 59%
Ulf Kristersson (Sweden) 33% 57%
Jonas Gahr Støre (Norway) 31% 60%
Rishi Sunak (U.K.) 29% 61%
Karl Nehammer (Austria) 28% 64%
Emmanuel Macron (France) 26% 68%
Olaf Scholz (Germany) 25% 70%
Mark Rutte (Netherlands) 24% 70%
Fumio Kishida (Japan) 24% 64%
Yoon Seok-youl (South Korea) 21% 73%
Petr Fiala (Czech Republic) 20% 76%