Freakinoldguy Freakinoldguy:
A real severe case of HDS.

To respond less glibly, I think Mathews needs to focus on Harper as a singular boogeyman, because the alternative, which is acknowledging that for someone occupying his place on the left/right spectrum, all three major parties (not to mention pretty much anyone to the right of Trotsky) are "neoliberal", is simply too much for him to take.
Justin Trudeau is likely to approve the TPP, has expressed seemingly sincere disappointment over Obama's rejection of Keystone, and has kept those on his party's left fringe like Adam Vaughan out of cabinet. I'm sure Mathews sees little real difference between Harper and Trudeau as it stands, and will undoubtedly see them as more alike as the rhetoric of hope gives way to practical matters of governance. Ironically enough, Justin sounds like he'll be more a Turner/Martin Liberal than a Pearson/PET/Chretien one. And the less said about Mulcair's Horwath-esqe grab at the centre, the better for Mathews' blood pressure.
Better to find a single scapegoat and focus for one's hatred and frustration. And for "poets" like Mathews, there's no better statement than overstatement, Godwin be damned.