I'm not sure how much of this indicates an allergy to democracy. I suspect it goes much deeper. I think we're watching a control freak lose control. Elections, democracy, difference all that create uncertainty which probably alarms Harper on a very deep level.
He's trying to manage his election campaign like he manages his government: total control and hiding from those uncomfortable areas like one-on-one debates and media questions. The ONE THING you don't do on the campaign trail is piss off the media following you around and he's gone and done it. And it's made him appear - probably much closer to the authentic Stephen Harper - paranoid and afraid.
It is fascinating to watch such an apparently banal personality display such a paradoxically rich psychological drama.