Sen. Rob Portman’s hundreds of summer campaign interns will be in Cleveland on Monday for an event featuring former Speaker Newt Gingrich and current Sen. Joni Ernst.

Gingrich, who is on the vice presidential short list for presumptive GOP nominee Donald Trump, and Ernst, an Iowa Republican who was believed to be on the list before appearing to take herself off, are the featured speakers at the intern event.

The Republican National Convention starts Monday in Cleveland.

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A campaign aide says that the interns will be bused to Cleveland from field offices across the state for the event with Portman, Gingrich, Ernst and top campaign officials to get updated on the state of the race against former Ohio Gov. Ted Strickland.

Portman’s seat is one that Democrats hope to flip in order to take control of the Senate. The race is rated Tilt Republican by Rothenberg-Gonzales Political Report/Roll Call.

According to an advisory obtained by Roll Call ahead of the formal announcement, the reception will take place in an auditorium at the metropolitan campus of Cuyahoga Community College. In addition to the summer interns, Portman volunteers from across the Buckeye State are expected to make the trip.

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Many will then participate in a previously announced Habitat for Humanity project.