Thousands Attend Trump Rally in Mobile, Alabama

The rally had to change venues twice.

The campaign had to switch locations twice -- from a hotel and convention center -- after demand for tickets exceeded holding capacities. Ultimately, the event was held in Mobile's Ladd-Peebles Stadium, which can hold up to 40,000 people.

The stadium was about half full when Trump started his speech. He said it drew 30,000 people.

"We were going to have 250, 300 people. The hotel was great. They said something is happening here. We can't hold this," Trump said. "And then, we want to the convention center and they can have 10,000 people...The next day they said too many people we can't put them in. So we came here."

Christopher Donato contributed reporting.