WASHINGTON -- New polls released on Wednesday and Thursday continue to show President Barack Obama holding narrow leads in a handful of critical battleground states, but running within a whisker of Republican presidential nominee Mitt Romney nationwide.While Romney gained significantly in the wake of the first presidential debate in early October, the lack of a continuing trend over the past two weeks helps counter a theme in some campaign coverage that Romney's support continues to "surge" nationwide.The most recent updates of the seven daily national tracking polls continue to split in terms of which candidate holds the nominal lead, ranging from a 4 percentage-point lead for Romney on the Rasmussen Reports automated tracking to a 3 point Obama advantage on the Investor's Business Daily/TIPP poll.Read More... More on Barack Obama