57% of Britons said the decision to leave the European Union in 2016 was the wrong one, compared with 32% who thought it was correct.
More than half - 55% - said they would vote to remain in the EU, against 31% who said they would stay out, if the referendum were to be held again.
30% is pretty close both in the UK and US and I suspect most other places. The problem is the 30% are far more united due to simpler desires and thus can form majorities while the rest of us are disagreeing with eachother.