[Grammar] Two Thirds majority

Two thirds majority of the parliamentarians is needed to make constitutional amendment.

OR

Two thirds majority of the parliamentarians are needed to make constitutional amendment.
Please, guide. Which one is correct or formal.

A two-​thirds majority is needed ...

The first is nearest, but you need a couple of articles.

'A two-thirds majority of the parliamentarians is needed to make a constitutional amendment.'

Can it be with the definite article like this?
The Two-thirds majority of the parliamentarians is needed to make a constitutional amendment.

No.

Thank you for this help. Is this sentence grammatically incorrect, then? Or the subject will take plural verb?
The Two-thirds majority of the parliamentarians is needed to make a constitutional amendment.

I already told you that you can't use "The two-thirds ...". Both Rover and I told you that it's "A two-thirds majority is ..." - did you not believe us the first time?

M Shoaib said:

Thank you for this help. Is this sentence grammatically incorrect, then? Or the subject will take plural verb?
The Two-thirds majority of the parliamentarians is needed to make a constitutional amendment.

Click to expand...

It's incorrect:


All these would be marked against you if you were being graded.

The subject, "majority," is a singular noun and cannot take a plural verb.