Comment by int_19h

> Even a threshold of 2/3 or 3/4 to change is much easier to overcome than the federated constitutional amendment process in the US.

This can go either way. If you can agree 3/4 of state legislatures to agree on an amendment, you can successfully ratify it (via convention if needed if Congress isn't amenable). But 3/4 of state legislatures can represent small states - so much so that it's possible to amend the US Constitution though legislatures that are nominally representing less than 25% of the country (and in practice even less than that when you consider the effects of FPTP).