What is a substantive edit?
In a “Substantive Edit,” the author receives general feedback about the manuscript’s overall pacing, organization, narrative voice, plot development/narrative arc, characterization, point of view, setting, delivery of background information, adult sensibility (children’s books only), and the synchronicity of age-appropriate subject matter with target audience, as the Editor determines appropriate and necessary after reviewing the entire manuscript. It is not a word-by-word, line-by-line “Line Edit.” - Deborah Halverson, the Dear Editor editor
So, if you have a qualifying manuscript, run, don't walk, to enter.
*In truth, I would like to get the substantive edit for my manuscript and spreading the word like earns me another entry. As a matter of fact, I'd prefer none of you enter so as to improve my chances. So much for my veneer of nobility.