Most people are probably wondering how it happened. Tom Delay on Dancing with the Stars? Puh-lease. Well luckily for you, The Year of the Blog has exclusive interviewing rights with the casting directors for the show, and this is the story.
They really wanted M.C. Hammer:
Unfortunately for them, the intern they hired just moved from Washington D.C. where he worked exclusively as a receptionist for John Boehner's office. He knew republican house members. And because of that, he really didn't know anything cool... especially ironically cool. So when he heard M.C. Hammer, he thought that was obviously Tom Delay, The Hammer himself.
Tom Delay of course has absolutely nothing better to do. So he said yes.
End of story.