Giffords says in Congress she learned: Strong women get things done.
The crowd is cheering.
With speeches by President Barack Obama, Vice President Joe Biden and vice presidential nominee Tim Kaine, the arena is packed and the crowd is getting more vocal.
Mark Kelly echoes other speakers tonight, saying Hillary Clinton "is ready to take on one of our country's greatest moral failures here on our soil: the gun violence that is tearing so many of our communities apart."
