John is one among several others who has/have...

[Tan Elaine]

John is one among several others online who has/have expressed support for the government's proposal to ban smoking in shopping centres.

The above sentence is my own.

I would like to know whether I should use "has" or "have". I think "has" is correct because "John" is the subject.

Am I correct? Thanks.

 

[GoesStation]

This is one of those ambiguous cases where the best solution is to re-write the sentence. As written, either solution will look wrong to many readers.

 

[Rover_KE]

And proponents of both variants can make plausible rationales for their preference.

 

[Tarheel]

Say:

John is one of many who have expressed support....