We currently have the following
survey-sampling with 161 questions and a wiki
survey-weights with 138 qs, a wiki
survey 974 qs, no wiki
polling 45 qs, no wiki
voting-system 21 qs, wiki
It seems to me that voting-systems is quite distinct but the others offer scope for rationalisation. I shall post two answers with proposals to attract comments.
This follows on from some discussion in a post in the current tag synonym thread.
