New national poll from Fox News/Opinion Dynamics (Jan 30-31, 377 Dem LV, MoE +/-5%; 297 GOP LV, MoE +/-6.0%). On the Democratic side, Obama is within 10 points of Clinton. When the last Fox News/Opinion Dynamics poll was taken in December, Clinton was at 49, Obama at 20, and John Edwards was at 10 percent. Since then, Obama has significantly improved his position nationally, while Clinton has not:

Democrats
Clinton 47 (-2 vs. last poll December 18-19)
Obama 37 (+17)
Undecided 11

Overall, Clinton leads by 8.5% in the RCP National Average.

On the Republican side, the last Fox News/Opinion Dynamics poll taken in December had Giuliani on top with 20%, Huckabee and McCain tied with 19%, and Romney in fourth with 11%. What a difference five weeks makes:

Republicans
McCain 48 (+29 vs. last poll December 18-19)
Romney 20 (+9)
Huckabee 19 (nc)
Paul 5 (+2)
Undecided 5

McCain leads by 10.7% in the latest RCP National Average.

Head to Head Match Ups
Clinton 44 - McCain 45
Clinton 50 - Romney 36

Obama 44 - McCain 43
Obama 51 - Romney 33

Clinton 41 - McCain 41 - Bloomberg 6
Clinton 46 - Romney 30 - Bloomberg 8