From the Wash Post:

Delaware Attorney General Beau Biden will not accept an appointment to the Senate to replace his father, according to knowledgeable state sources, a decision that scrambles the race to to replace the vice president-elect in the Senate next year.

Beau Biden, the eldest son of Joe Biden, removed himself from consideration even as he prepares to deploy for a year-long tour of duty in Iraq. (Biden is a member of the Delaware National Guard and is currently training in Texas before being deployed to the Middle East.)

What Beau Biden's decision means for the Delaware political landscape is still anyone's guess. Given his military commitment, there seemed to be no way that he could be appointed to the seat in early 2009 anyway, and his decision to pro-actively remove himself from consideration simply affirms that reality.