My response

The "We didn't get the job done" ad uses what other non-Conservative people (Ignatieff) have had to say about Dion re: the environment. Although I think the ad is only moderately succesful, that's not a bad strategy. So if I was a campaign guy and asked to respond, I would adopt the same tactic. Let non-Liberals tell us about who Dion is and what he has done:

What kind of an environmental leader is Stephane Dion?

''If they try to smear him and say that he's somehow associated with past Liberal corruption, they're just barking up the wrong tree. If they try to say he was anything other than a very strong environment minister, they're making it up." - Elizabeth May, Leader of the Green Party

"[Stephane Dion] is a man who is, if I may say so across the partisan divide, ...a committed Canadian and a man of principle and conviction." - Jack Layton, Leader of the NDP

"Mr. Dion has made the environment a key part of his... platform - correctly identifying that protecting the planet's ability to provide for us by stabilizing our climate and absorbing our wastes is one of the key issues of the 21st Century. " - David Suzuki


What kind of an environmental leader is Stephen Harper?

"In the last few weeks alone, the Harper government has broken promise after promise to the world. Our Kyoto commitments are critical and urgent, yet no plan exists to meet them." - Elizabeth May, Leader of the Green Party

"[The Conservative Clean Air Act] is a disappointment on the scale of a Rolling Stones concert. I mean, what were the policy wonks at Environment thinking? And how could it have taken so long – eight months – to hatch something that does not accomplish a single major environmental goal?" - MP Garth Turner, kicked out of Conservative caucus

"Stephen Harper not only opposes Kyoto, but he refutes the science. He’s back in the dinosaur era. Harper is just totally out of it" - David Suzuki


That all can't fit in a 30 second TV spot, but any combination would work.