NPR released a new bipartisan poll today conducted by Democrat Stan Greenberg and Republican Glen Bolger. The survey’s congressional generic ballot results are perhaps the most interesting finding, where Democrats have slipped from a double-digit lead in October 2006 (51 percent to 40 percent) to a 42 percent to 42 percent tie with Republicans in 2009.

A few other highlights:

Right track/wrong track numbers have improved since last year (63 percent wrong track now versus 80 percent in May 2008) and are about where they were in March 2006, the last time the question was asked before Democrats won control of Congress in the November 2006 election (64 percent in March 2006).

Like several other national polls, the NPR survey shows the president’s approval at 59 percent.

Congressional approval has climbed back to 2007 levels (36 percent approve), an improvement over the lows of 2008 (22 percent).

Read the full NPR survey here.