U.S. Senator Marco Rubio will address Georgia Republican activists when they gather next month for the state party’s convention in Athens, the state party announced Friday.

Party leaders had hoped to refashion their annual summer convention into a major presidential cattle call, extending invitations to more than a dozen Republicans eyeing the White House.

So far, the Florida Republican is the only candidate the party has confirmed would attend, though South Carolina Sen. Lindsey Graham, another likely presidential hopeful, is rumored to be in the mix.

It’s also been speculated that former Arkansas Gov. Mike Huckabee and New Jersey Gov. Chris Christie, who will be in town the week of convention for a fundraiser, will be present.