PRESCOTT VALLEY, Ariz. - Donald Trump’s upcoming visit is the talk of the town in Prescott Valley. Republican headquarters says there could be up to 20,000 people at the Prescott Valley Event Center on Tuesday afternoon.

If that many people show up, most will not get in, as the venue only holds just over 7,000.

"They said if it fills up, you won't get in," said Trump supporter Jill Fisher. Fisher is sitting under her blanket outside the event center all night. "There's only one problem, they need porta-potties."

This 83-year-old isn't alone either. More than a dozen Trump supporters joined her for an all-night event.

Meanwhile inside, volunteers work on signs which will line the streets come daybreak.

"This is something so special for Prescott to have Trump come to our little town," said Linda Nichols, the vice president of Republican Women of Prescott.

Just a few miles to the west, Sandra Laney can't keep up with the phone calls. Laney is the executive assistant at Republican headquarters in Yavapai County.

"I don't think most of the people who live here have ever even come in close contact with a presidential candidate or the potential president of the United States,” Laney said. “It's quite exciting.”

Donald Trump is actually the fourth presidential candidate to visit Prescott Valley over the years, and they all have one thing in common: Barry Goldwater, John McCain, and George W Bush all ran as Republicans.

Trump's campaign stop is scheduled to begin at 2 p.m. Tuesday. Catch it all on 12 News and