Newly-updated RCP Bush job approval index shows the President edging back toward 40%. 

By the way, we've added the new Cook Political/RT Strategies poll to the mix. It's a collaborative effort by Charlie Cook of National Journal and two veteran pollsters who've opened their own shop: Thomas Riehle, formerly of AP-Ipsos and Lance Tarrance, formerly of Gallup and founder of The Tarrance Group. View the full questionnaire (in pdf format) here. Read Charlie Cook's write up of the results here.