Alabama. the trump campaign saying this all got bigger than they expected. how are locals even hearing about the rally? are people coming just for spectacle for this celebrity or for a real campaign event? >> reporter: yeah. you know, ari, i made a reference when i was in new hampshire earlier this week and i said that the crowd felt more like a football stadium than a political event. and little did i know i would be in a football stadium just a few days later. the crowd here, they announced this event on tuesday afternoon. and it spread so quickly they have had to change the venue a few time...