It seems most legislatures around the world just assumes simple majority vote is the default majority required to pass decisions despite it not being required by their constitution.

While I understand how this can come across as common sense and would ineveitably arise through convention, I'm curious why most countries don't consider this procedure important enough to be put in plain texts in their constitution.

Is there something about human nature that just accepts simple majority vote as the default method to resolve disagreements?

Source: Looking at constituteproject.org - the repository of the world's current and past constitutions - I have yet to find a constitution that has explciit requirement for simple majority vote to pass legislative decisions, meaning that in most cases, simple majority requirement is assumed.

  • 2
    Do you have any research to support the "most" assertion?
    – o.m.
    Apr 25 at 4:15
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    @QuantumWalnut, then your question would benefit from a link and you doing/reporting the count.
    – o.m.
    Apr 25 at 5:20
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    Different constitutions may be written with different structure and wording. Simply searching for a tag on some third party website doesn't seem sufficient evidence for the claim. For example, the Finnish constitution specifies simple majority under "Section 41. Consideration of matters in plenary session", which does not have that tag.
    – jkiiski
    Apr 25 at 6:05
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    Note that constitutions commonly opt to leave a lot of the details (on many matters, not just this) to the various national institutions, to avoid the constitution becoming too long and unwieldy. For example, the US Constitution, article 1, section 5, clause 2 (in part): "Each House may determine the Rules of its Proceedings". Apr 25 at 9:35
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    Thinking that more then a simple majority is needed for a vote and spelling out that a simple majority is needed are different matters. In the US constitution there are several places where it spells out how many votes are needed for something and it is always more then a simple majority. I am still wondering why you think that a simple majority needs to be spelled out as from what I can tell that is the most common way to decide something.
    – Joe W
    Apr 25 at 12:23