That's not a coincidence. These systems push governments to serve everyone, not just swing ridings.
It's time to make every vote count here too.
But the reports aren't specifically "are you happy?" Are they?
Like WHR uses specific quantifiable questions. Like about how much corruption in a part of government, do you typically help strangers, etc.
I definitely think it's highly subjective of course, and as a US ex pat who lives in Scandinavia the willingness to complain is so low here. But some parts of this are just a bit objectively better, so I don't think it's wildly off base that Scandinavia has high happiness