The popular vote of an election is exactly the same metric as a referendum. They can be compared directly. There have been many extremely close but critical re

The popular vote of an election is exactly the same metric as a referendum. They can be compared directly. There have been many extremely close but critical referendums: https://en.wikipedia.org/wiki/French_Maastricht_Treaty_referendum,_1992 https://en.wikipedia.org/wiki/French_Maastricht_Treaty_refer... https://en.wikipedia.org/wiki/Danish_Maastricht_Treaty_referendum,_1992 https://en.wikipedia.org/wiki/Danish_Maastricht_Treaty_refer... https://en.wikipedia.org/wiki/Quebec_referendum,_1995 https://en.wikipedia.org/wiki/Quebec_referendum,_1995 https://en.wikipedia.org/wiki/Quebec_referendum,_1980 https://en.wikipedia.org/wiki/Quebec_referendum,_1980 https://en.wikipedia.org/wiki/Swedish_European_Union_membership_referendum,_1994 https://en.wikipedia.org/wiki/Swedish_European_Union_members... https://en.wikipedia.org/wiki/Norwegian_European_Union_membership_referendum,_1994 https://en.wikipedia.org/wiki/Norwegian_European_Union_membe... 60% is decisive, and a clear mandate.