Political polls are everywhere, and after last week's revelation that one of them was fake, allegedly a social experiment, voters may be wondering how to tell which numbers to trust.

The UTSA Center for Public Opinion Research explains how polls are put together.

"The way I like to describe polling to students and other folks aren't familiar is that essentially what you're doing is you're taking a sample from a larger population, and you want that sample to look like the larger population," said Bryan Gervais, director of the research center.