The Nashville Post reports that Rep. Bart Gordon (D-TN) has announced that he will retire from Congress at the end of this term.
The Hotline: "Gordon leaves open a seat Dems could have trouble defending. Sen. John McCain won the district in '08 by a 62%-37% margin, and national GOPers
instantly characterized it as a lean-GOP seat that is likely to
eventually fall into their hands"
Update: The Cook Political Report moves TN-6 from Lean Democrat to Likely Republican.