To be fair to Mike Huckabee, although this ad might be the most bizarre thing we've seen in the Presidential horserace yet, it did remind me that, yes, Mike Huckabee is still in the horserace for President, and that's 90% of why it was released.
By all rights, Iowa is Huckabee's golden land. Most of Iowa's caucus-goers are solidly Evangelical, many of them are social conservatives (in fact, Iowa is one of the few places where social conservatism is still a thriving and reliable demographic). Iowans have a reputation for embracing crony Capitalism, often in the form of ethanol subsidies, and, in the past, they've been very open to Huck's message of big government Republicanism - a state that embraces limited government where possible, but also prefers a presence in your refridgerator and your bedroom.
And yet, Huckabee can't get any traction anywhere in the US. So he's forced to make a spoof Adele video to remind you he exists. Which I shall now bless you with.