Space Aliens & the Election

Do you remember The Simpsons "Treehouse of Horror VII" episode? It was the one where the two space aliens, Kang & Kodos, replace Bob Dole & Bill Clinton in the presidential election. I have to say that I'm reminded of that watching this Republican Convention.

I'm not saying that John McCain is a space alien. I'm theorizing Bristol Palin & Levi Johnston might be. I'm just saying they are Always holding hands. In every picture. In every TV cutaway. They are always standing next to one another & they are always holding hands.

In the Simpsons episode a reporter asks the two aliens (still looking like Dole & Clinton), "People are becoming a bit... confused by the way you and your opponent are, well, constantly holding hands." Kang responds, "We are merely exchanging long protein strings. If you can think of a simpler way, I'd like to hear it."

So I'm asking, is it possible Bristol & Levi are constantly exchanging long protein strings? Is it possible they are space aliens? And if they were, would it be acceptable to ask questions about that?