Rubio jokes in Spanish, gives speech in English

Marco Rubio is showing off his Spanish while campaigning in Houston - but ducking an unexpected question put to him in the language.

As he addressed hundreds of cheering supporters in a hotel conference room, the Florida senator grinned when a man yelled, "Viva la Constitution!"

Many in the crowd laughed and Rubio responded, "You're from Texas, you know what he said."

But when another man yelled in Spanish, "Senator, how are you going to win the Latino vote?" Rubio said in English, "Let me finish my speech."

Moments later, he referenced the question and said he wanted to win over all Americans.

That prompted a woman to yell, "What about Muslim-Americans?" Rubio answered, "The debate's tomorrow."

The next GOP debate is Thursday night at the University of Houston.