After weeks of widening margins in the battleground states and nationally, polling in the presidential race shows the race tightening again.

The latest Gallup tracking poll conducted in the three days immediately following last week's first presidential debate between Mitt Romney and Barack Obama shows the race tied - with each candidate currently garnering 47 percent support among registered voters. Tracking conducted in the two days leading up to the debate showed President Obama with a five point lead - 50 percent to Mitt Romney's 45 percent.

No polls that ABC News considers air worthy have yet been released in the battleground states.

The reason for the narrowing race, at least on the natinoal level, seems certainly linked to Romney's stronger debate performance. When Gallup polled those who viewed the Oct. 3 debate between the two presidential candidates, 72 percent said Romney had won, while 20 percent pronounced Obama the victor.

Romney's win among viewers was the largest margin that Gallup had ever measured.

The next debate on the schedule is the vice presidential face-off between Joe Biden and GOP candidate Paul Ryan on Thursday, Oct. 11. ABC News' Martha Raddatz will moderate.