Liberal interest groups are running tough advertisements against their own congressional allies, people like Max Baucus and Ben Nelson.

CNN: Commentary: Democrats' incompetence isn't funny

Although it's a long shot, Republicans will try to woo Democrats Zell Miller of Georgia, Ben Nelson of Nebraska and Max Baucus of Montana to their party.

CNN: Signs of stormy policy battles ahead

The FIA itself claims Piquet's father Nelson Sr alerted president Max Mosley to the possibility of a plot following last year's race but that, as his son was not willing to make a statement, the FIA could not proceed with an investigation without further evidence.

BBC: F1 returns to scene of the crime