That's the ad, and quite possibly an election-swaying production, from the Colbert Super PAC. For the dull, it should be explained that this is a parody. A parody is "a humorous or satirical imitation," and this mimics the mud-slinging ads of Super PACS intent on swaying campaigns with the sheer force of money.
But it's more than a parody. It's an audio-visual aid, an educational tool to alert the public ti the profound changes in campaign finance that may allow the richest to simply buy their way in to office. No big change there, you might say, but now they act as if it's nothing to be ashamed of, and the law gives it all a big green light. About two years back, the highest court in the land "un-evened" the playing field by allowing unlimited anonymous donations to campaigns. A couple fellows from Huffington Post explain what this means.
To further confuse you, here is Jon Stewart from a press release talking about his role as head of the Colbert Super PAC:
Hi again, it’s me, Jon. When I took over this Super PAC, I had no idea there’d be so much email-writing. Also, there are a lot of plants around Super PAC office with extremely specific watering schedules. Seriously, does a Northwood Spotted Fern really need to be watered "thrice fortnightly at dusk"?
Anyway, The Definitely Not Coordinated With Stephen Colbert Super PAC made an ad, and I figured you’d want to know. I’ve attached the press release below, so hopefully your mouse’s scroll-wheel isn’t broken.