Where's the history?

Broken record warning:

I just saw the finalists for the Shaughnessy Cohen Prize for Political Writing. Looks like some interesting books, but I can't help but notice that the list doesn't have any works by historians.

The official details are here, but here is the list:

BarricadesPublished by Goose Lane Editions

Taras Grescoe for Straphanger: Saving Our Cities and Ourselves from the AutomobilePublished by HarperCollins Publishers

Noah Richler for What We Talk About When We Talk About WarPublished by Goose Lane Editions

Jeffrey Simpson for Chronic Condition: Why Canada’s Health-Care System Needs to be Dragged into the 21st Century Published by Allen Lane Canada

Peter F. Trent for The Merger Delusion: How Swallowing Its Suburbs Made an Even Bigger Mess of MontrealPublished by McGill-Queen’s University Press