Rep. Tom Davis (R-VA), "who has been seen as a leading candidate to replace retiring Sen. John Warner (R-VA) in 2008, may now be just a day away from announcing his own retirement from Congress," according to Roll Call.
Recent reports suggested that Davis "is rethinking his long-awaited Senate bid, and Congressional sources said Tuesday that a run for re-election also may be off the table for the seven-term Congressman."
"Davis admitted earlier this year that he considered retiring before the 2006 election. He said he decided to run again in part because he believed the poor political climate in the previous cycle would have enabled Democrats to pick up his Northern Virginia seat."
If Davis retires, the VA-11 seat is very much in play.
http://politicalwire.com/archives/2007/10/24/davis_may_announce_retirement_in_va11.html