Saturday morning, from 10 a.m. to 12 noon Eastern, join Politics Nation on XM Radio's POTUS '08, when we'll tackle the week in politics. Listen free here (link about half-way down the page) as:

-- We talk with Jason Chaffetz, the Utah Republican who just ousted Rep. Chris Cannon in a primary. How hungry for change are voters in both electorates?

-- Wall Street Journal reporter Susan Davis joins Josh Kraushaar and Reid Wilson in studio for the debate of the year: Which states are really in play? None of us agree on anything, so it'll be the knock-down drag-out to hear.

-- And John McCain and Barack Obama are addressing the National Association of Latino Elected Officials in Washington. We'll have their speeches, and reactions to those speeches, live in a special extended edition of Politics Nation radio.

All that and a few surprises, we're sure, Saturday morning on Politics Nation, only on XM Radio's POTUS '08. Listen live, Saturday from 10 a.m. to noon Eastern and again at 6:00 p.m. Eastern.