Approx. numbers:
Eligible = 230
actual = 170
My guess? No advantage to being a corporate member and don't really care enough about voting, to find the correct check box in their options list.:no::swoon::slap:
I think a properly worded poll will get a look more members on a one time basis. An advantage to being a member will bring them out of the woodwork. Even a very bright and obvious graphic in their postbit might do it