Both national and swing-state polls are beginning to tighten in the presidential race between President Barack Obama and Republican challenger Mitt Romney. It's a signal that an expected Romney bump is starting to take shape after his consensus win in the first presidential debate on Wednesday.

Here's a sampling of the national polls:

 

Gallup: Romney is starting to close in on Obama, trailing by only 3 points in the seven-day rolling average. And that average only reflects two days of surveys post-debate, so the full effect won't be known until next Wednesday.