Muslims are a tiny fraction of the U.S. population, making up somewhere around one percent, according to the Pew Research Center.
But a lot of Muslims live in key battleground states like Florida, Virginia, Michigan, Pennsylvania, and Ohio, which makes them a small but important group.
That's why Hillary Clinton's campaign is trying to make sure they show up in large numbers on Election Day.
This week across the state of Florida, Democrats were making a major voter registration push tied to Eid, the Muslim holiday. Muslims lean Democrat, but they're less likely to be registered than your average American.