(FWIW, I am an emacs user).
[1] From HN about a year ago - http://news.ycombinator.com/item?id=3717754
[2] Another random poll I found searching HN - http://gopollgo.com/which-editor-do-you-prefer-emacs-or-vi
[3] Slashdot poll from 2009, the earliest/only one I can actually find right now - http://slashdot.org/pollBooth.pl?qid=1717&aid=-1