On Wednesday evening, Hillary held a town hall event, open to the public, at the North Iowa Events Center in Mason City.

- Audience
members look on as Democratic presidential candidate Hillary Clinton
speaks during a town hall meeting Wednesday, Dec. 16, 2015, in Mason
City, Iowa. (AP Photo/Charlie Neibergall)

- Democratic
presidential candidate Hillary Clinton greets supporters during a town
hall meeting Wednesday, Dec. 16, 2015, in Mason City, Iowa. (AP
Photo/Charlie Neibergall)

- Democratic
presidential candidate Hillary Clinton reacts to supporters during a
town hall meeting Wednesday, Dec. 16, 2015, in Mason City, Iowa. (AP
Photo/Charlie Neibergall)

- Audience
members listen as Democratic presidential candidate Hillary Clinton
speaks during a town hall meeting Wednesday, Dec. 16, 2015, in Mason
City, Iowa. (AP Photo/Charlie Neibergall)

- Democratic
presidential candidate Hillary Clinton speaks during a town hall
meeting Wednesday, Dec. 16, 2015, in Mason City, Iowa. (AP Photo/Charlie
Neibergall)