Many in the crowd are standing and waving signs with Kaine's name and the phrase "Juntos se puede" -- together we can.
Kaine describes how he met and married his wife, saying, "I am the luckiest husband in the world."
He gives a little wave to his wife as the crowd claps.
Doing missionary work in Honduras, Kaine said he got a firsthand look at a dictatorship. "It convinced me that we've got to advance opportunity for everyone," he said.