The Invisible Primary, 10/21

Tracking the GOP race to 2012

Sarah Palin will appear on "The Oprah Winfrey Show," in an episode airing November 16; she'll also speak at a Wisconsin Right to Life event in suburban Milwaukee November 6; and at the College of the Ozarks in southwest Missouri December 2; Mitt Romney will help Sen. Jim DeMint (R-SC) raise money next week, appearing at a fundraiser in Charleston, South Carolina; and before Sarah Palin releases her memoir, Mike Huckabee will publish a book on Christmas.