Regarding my OCs (Patreon)

When I've been making polls lately, when a prompt involves one of my OCs, I name the OC and that's it.  This kind of assumes that the people reading the polls know who these OCs are in order to make an informed decision, and I never stopped to ask if that's the case.

So I'm going to ask:  When I make polls like these in the future, should I include a reference image of the character in question?  Or do people more or less know who I'm talking about when I mention an OC by name?