I was comparing total presidential diversity. The other people who ran (or were running) in the democratic race were not put on many of the measures of diversity because they were all old, white, and rich (O'Malley, Webb, Chafee, etc).
Its important to look at each party's presidential race holistically, including those who ran but did not have enough popularity to win.
According to
http://www.politics1.com/p2016.htm, which is the first link I got when I googled 'presidential candidates 2016', there are *at least* 147 people who've expressed they are running or planning to run for President under the Democratic Party, most of them write-in hopefuls. (For comparison, the count would be at least 189 for the Republicans.)
So, by your new 'holistic' standards (even if they didn't have the popularity to win), you would have to go through that list and find out who's 'diverse'.
Do you see why it's important to have a standard way to measure diversity? You're basically just cherry picking your numbers to suit your agenda.
Edited 2/19/2016 20:36:52