That's right, everybody votes with the new Nintendo Wii channel. It's available right now at the Wii Software section on the Wii Shop channel. And it's free!

You can register Miis too vote on user submitted polls and polls from Nintendo. I haven't seen one from Nintendo them selves though, but you can bet they will submit one every once in a while.

Check Go Nintendo for more details and a video by vooks.net.
Link: http://gonintendo.com/?p=13165