At Romney’s Boston headquarters, strategists see the state as significant enough that they have scouted for a firm to help oversee a Florida campaign.

“Florida is without question a must-win state — absolutely,” said Ned Siegel, Romney’s Florida co-chairman and a former ambassador to the Bahamas under President George W. Bush.

Romney was raising money Tuesday at the Jacksonville Jaguars’ football stadium, and he is planning to return to the state June 14-16. His team here thinks his message of fixing the economy is particularly resonant in Florida, where the unemployment rate is 10.4 percent, above the national average.

“We’ve hit bottom, and all we’re doing is bumping on the bottom, and we need someone who understands how to create economic engines,” Siegel said.