Planning is under way for a joint Romney-Gingrich formal endorsement event to be held in a couple of weeks, Hammond said.
Gingrich, in his remarks Wednesday, will discuss Romney in the context of "how we need to help defeat Barack Obama and the need to help (House Speaker John) Boehner" maintain Republican control of the House of Representatives, Hammond said.
Hammond said given that Gingrich already has signaled his intention to suspend the campaign and support Romney, "It's not any surprise. It's no surprise where he will go."
Gingrich will be spending most of the summer and fall on the campaign trail stumping for candidates, Hammond said.
Click here for more on Wednesday's announcement and where Gingrich goes from here, including his campaign debt.