Gimenez said negotiations between the county and Dolphins haven't begun, and a deal will be necessary before a referendum is scheduled. Yet to be determined is who would pay for the special election, which could cost $4 million.
The Dolphins had previously resisted a referendum, saying there wasn't time to hold a vote before the site for Super Bowl 50 was decided. But local legislators have shown only tepid support, and the Dolphins now believe referendum approval would help their chances in Tallahassee.
"Our harshest critics have said the voters need to weigh in," Dee said. "We support that."
Miami has hosted the Super Bowl 10 times, most recently in 2010. The Dolphins and the NFL say stadium upgrades are needed to keep the city competitive in bidding for future Super Bowl.
Online: http://pro32.ap.org/poll and http://twitter.com/AP_NFL