MIAMI -- Mitt Romney has a message for the Democrats: “Bring it on.”

Republican presidential candidate and former Massachusetts Governor Mitt Romney REUTERS/John Adkisson (JOHN ADKISSON)

Asked about the Democratic National Committee’s latest attack ad, Romney told reporters here Tuesday morning: “They don’t want to see me as the nominee, that’s for sure.”

“It shows that they’re awfully afraid of facing me in the general election,” Romney added. “They want to throw the primary process to anybody but me. But bring it on. We’re ready for ‘em.”

Romney made the remarks while greeting supporters following an endorsement rally at a Cuban food warehouse here, where he received the official backing of three prominent Cuban-American Republicans -- Rep. Ileana Ros-Lehtinen and Mario Diaz-Balart, as well as his brother, former congressman Lincoln Diaz-Balart.