Who's "The King"?

"I hate these silly polls!" my wife exclaimed. She was trying to do the LA Times Sunday crossword puzzle on the web.
    "What?" I asked.
    "Oh, they've got a picture of Elvis and a picture of Michael Jackson and they ask which is The King. And it flashes."
    "Ugh, yes, they are silly."
    "Maybe if I vote, it'll stop flashing and go away."
    "Might work...Vote for Elvis, of course."
    "Of course!"