Politico: Senate Democratic leaders are backing away from plans to tackle any type of energy legislation during the upcoming lame duck session, including a renewable electricity standard and a response to the BP oil spill. Majority Whip Dick Durbin (D-Ill.) said Wednesday that the legislative agenda is quickly filling up for the post-election session, with priority going first to the START arms reduction treaty with Russia, tax cuts and the fiscal year 2011 omnibus spending bill. “I …