[33girl]

Each collegiate chapter gets a vote.
Each alumnae chapter gets a vote.
A chapter advisor from each collegiate chapter (must be an initiated sister) gets a vote.
Each national councillor gets a vote.
National volunteers "in accordance with national procedure" - each gets a vote.

Anyone who's a paid employee (i.e. HQ staff or leadership consultants) cannot vote.

The size of the chapters (alum or collegiate) doesn't matter - each gets one vote.