A new Pew Research survey finds Democrats have the edge in the generic congressional ballot over Republicans, 45% to 44%. Four years ago, however, Democrats held an 11 point lead.
"Major shifts in sentiment among key voting blocs account for the improved GOP standing in 2010. Republicans now enjoy advantages among typically loyal voting blocs that wavered in 2006, notably men and whites. The GOP is also now running better than four years ago among three key swing groups in recent elections -- independents, white Catholics and seniors."
"Republicans also continue to enjoy an engagement advantage over the Democrats, which at least in part reflects the greater disposition to vote among these voting blocs that have swung their way."