Florida is a state—it has a Governor (currently Ron DeSantis), not a mayor.
Winter Haven is a city in Polk County, Florida. Its current mayor (as of 2024) is Nathaniel Birdsong.
Winter Haven operates under a commission-manager system: the mayor is a voting member of the 5-person City Commission, elected at-large for a 4-year term. Day-to-day administration is handled by a hired City Manager.