"He will introduce the senator at the convention," said Jim Bennett, the senator's son and campaign manager.
Jim Bennett figures that should bring some electricity to the gathering because "he's the most popular political figure in the state of Utah, so we're glad to have him on our side."
Bob Bennett has been under strong attack by conservatives who feel that he is not conservative enough, and he is being challenged by seven Republicans running to his right. But Jim Bennett said Romney is well beloved by many conservative delegates who may still be undecided about Bob Bennett, and he hopes his endorsement will have power.
"Nine of 10 voted for him the last presidential primary here," Jim Bennett said. "He's been a strong supporter and wants to be as helpful as he can."
Jim Bennett said the campaign and Romney are still discussing what other events Romney may participate in that weekend. "But it is confirmed that he will attend the convention and introduce the senator," he said.
Of course, it will not be the first time Romney has helped Bob Bennett.