Here is an interesting op-ed article (Florida ignores ‘unanimous jury’ legislation in death penalty cases at its peril) in the Miami Herald advocating for unanimous juries in Death Penalty cases. Apparently, Florida is the only state in the union that allows someone to be put to death based on a non-unanimous recommendation from the jury. According to the article, written by former Florida Supreme Court Justice Raoul Cantero and Florida State University law professor Mark R. Schlakman,
Florida is an outlier insofar as allowing capital-case juries to find aggravating circumstances and recommend a death sentence by a simple majority, e.g., 7-5. All 33 other death penalty states require some form of unanimity
The entire article can be accessed here.