Andrew Gillum, who was narrowly defeated in the governor's race, was indicted on fraud charges.
The Democrat was accused of 21 counts of wire fraud, conspiracy to commit wire fraud and making false statements to the FBI.
One of Gillum's top advisers is facing 19 counts of conspiracy and wire fraud.
Gill and Lettman-Hicks made false promises about the legitimate purpose of the funds, and diverted the money to a company owned by Lettman-Hicks, who then disbursed it to Gill.
Gillum said in a statement to NBC News that the case was politically motivated and that his legal team would prove his innocence.
The attorney for Gillum did not reply to the request from Forbes.
Gillum and Lettman-Hicks were scheduled to appear in court.
Gillum served as mayor of Tallahassee and was under investigation by the federal government. Gillum received gifts from undercover FBI agents. He agreed to pay a $5,000 state ethics fine as part of a settlement for accepting gifts that he shouldn't have. Gillum lost to the Republican by about 33,000 votes in the mayor's race.
The maximum sentence for each charge of wire fraud and conspiracy to commit wire fraud is 20 years in prison. The maximum sentence for making false statements is five years.
Andrew Gillum lost the governor's race despite support from billionaires.
The ex-Florida gov candidate was fined in an ethics case.