New AP national survey (February 22-24, 473 Democrats/Lean Democrat; 381 Republican /Lean Republican) showing Barack Obama leading Clinton for the first time:

Democrats
Obama 46 (+5 vs. last poll Feb 7-10)
Clinton 43 (-3)
Undecided 6

Obama leads by 4.6% in the RCP National Average.

On the Republican side, McCain continues to build support:

Republicans
McCain 53 (+9 vs. last poll Feb 7-10)
Hucakbee 27 (-3)
Undecided 4

McCain leads by 27 points in the RCP National Average.

General Election Match Ups (w/leaners)
Clinton 48 - McCain 43
Obama 51 - McCain 41