Out of curiosity, and because it is Sunday morning and I have a cold and can't get my brain to do anything tricky, I counted the number of candidates in each year's DPL elections.

Year Count Names
1999 4 Joseph Carter, Ben Collins, Wichert Akkerman, Richard Braakman
2000 4 Ben Collins, Wichert Akkerman, Joel Klecker, Matthew Vernon
2001 4 Branden Robinson, Anand Kumria, Ben Collins, Bdale Garbee
2002 3 Branden Robinson, Raphaël Hertzog, Bdale Garbee
2003 4 Moshe Zadka, Bdale Garbee, Branden Robinson, Martin Michlmayr
2004 3 Martin Michlmayr, Gergely Nagy, Branden Robinson
2005 6 Matthew Garrett, Andreas Schuldei, Angus Lees, Anthony Towns, Jonathan Walther, Branden Robinson
2006 7 Jeroen van Wolffelaar, Ari Pollak, Steve McIntyre, Anthony Towns, Andreas Schuldei, Jonathan (Ted) Walther, Bill Allombert
2007  8 Wouter Verhelst, Aigars Mahinovs, Gustavo Franco, Sam Hocevar, Steve McIntyre, Raphaël Hertzog, Anthony Towns, Simon Richter
2008 3 Marc Brockschmidt, Raphaël Hertzog, Steve McIntyre
2009 2 Stefano Zacchiroli, Steve McIntyre
2010 4 Stefano Zacchiroli, Wouter Verhelst, Charles Plessy, Margarita Manterola
2011 1 Stefano Zacchiroli (no vote yet)

Winner indicate by boldface. I expect Zack to win over "None Of The Above", so I went ahead and boldfaced him already, even if there has not been a vote for this year.

Median number of candidates is 4.