Heather,
 
> As I see it, only the houseless NCA falls into this category

Not sure - a house is, as I see it, neither a constituency or a stakeholder group,
as the whole concept of "houses" is, at least the way I see it, basically just a
voting construct. But, again, I could be very wrong. And anyway, my spell
checker keeps insisting "houseless" should be spelled "horseless".

> but I assume any SG or C could nominate someone of their choosing
> (not necessarily someone from within the SG/C).

I guess so, yes - but (and now we are really getting into minor details, but...)
can a NCA nominate anyone?
  
    Julf