MIAMI (CBSMiami.com) – Former Massachusetts governor Mitt Romney picked up a powerful ally in his race for the White House.

Former Republican National Committee Chair and Florida Senator Mel Martinez officially endorsed Romney for president in 2012.

Martinez is going a step further and will serve as chairman of Romney’s National Advisory Council. Martinez said Romney’s private sector experience makes him the best candidate.

Securing Martinez’s support is key if Romney wants to win the state of Florida and eventually the GOP nomination. In recent straw polls, Romney has struggled in Florida.

Florida’s presidential primary is set for January 31, 2012.

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