This week on Politics Nation Radio, the Democratic primaries are over, and the down-ballot primaries are just beginning. In the first hour, we deconstruct what went wrong in Hillary Clinton's once-inevitable bid for the White House, and check in with candidates seeking to replace retiring Republican Rep. Tom Davis in Virginia.

And in the second hour, the Republican Party is seriously wounded, and the trouble goes beyond simply the brand. If the very message is antiquated, where does the GOP go from here? We talk with GOP strategist Josh Kahn, South Carolina party chair Katon Dawson, National Review senior editor Ramesh Ponnuru and Rep. Thaddeus McCotter to find out.

Be sure to tune in this Saturday, from 10 a.m. to noon Eastern and replayed from 6 p.m. to 8 p.m. Eastern, on XM Radio's POTUS '08 for Politics Nation, live from the nation's capitol. You can find the listen free link, along with a preview of the show, in this space every Friday afternoon.