Republican presidential candidate Donald Trump will host a rally at Iowa State University Tuesday as he tours the state ahead of the Feb. 1 Iowa Caucus.

The Trump campaign is also teasing a “special announcement” and a “very special guest” at the event in an email sent to supporters over the weekend.

The rally is open to the public, but tickets are required through Eventbrite at TrumpAmes.Eventbrite.com. Details are below:

WHO: Republican presidential candidate Donald Trump

WHAT: Donald Trump rally at Iowa State with a “special announcement” and a “very special guest.”

WHEN: 5 p.m. Tuesday. Doors to the rally will open at 3 p.m.

WHERE: Jeff and Deb Hansen Agriculture Student Learning Center, 2516 Mortensen Rd., Iowa State University, Ames

TICKETS for the event are available here.

Trump’s stop in Ames is just one of several events he has planned before the caucus. Trump is planning a rally at the John Wayne birthplace in Winterset earlier in the day before coming to Iowa State.

Trump last made an appearance in Ames during the annual Cy-Hawk football game between Iowa State and Iowa in early September. He toured Jack Trice Stadium with President Steven Leath.

Leath also appeared with other GOP presidential candidates while tailgating in Ames that day, saying he appreciates the opportunity to meet with any candidate.

He’ll also host events at Dordt College in Sioux Center, Central College in Pella and the University of Iowa in Iowa City in the days after his Ames event.

Trump is near the top, but behind U.S. Sen. Ted Cruz, R-Texas, in the latest Iowa poll from The Des Moines Register/Bloomberg Politics by just 3 points. Cruz has support from 25 percent of likely caucusgoers, while Trump sits at 22 percent.