Double jeopardy is the promise that the government gets one shot. It comes from the Fifth Amendment to the United States Constitution and Article I, Section 9 of the Florida Constitution, and it shapes what the State can and cannot do across a single case and across separate ones.
This page explains the three protections double jeopardy provides, the test for whether two charges are really the same offense, the moment the protection takes hold, and the situations where a retrial is still allowed.
The Three Protections
The Double Jeopardy Clause provides three separate guarantees: it protects against a second prosecution for the same offense after an acquittal, against a second prosecution for the same offense after a conviction, and against more than one punishment for the same offense. In each one, the key question is whether two charges are the same offense in both law and fact.
Double jeopardy issues often hide inside a charging document that stacks counts on a single act, and catching an improper stack can strike a charge or a conviction. It is a defense that rewards close reading. Learn more about my background.
When the Same Offense Means the Same Offense
The State is often allowed to bring several charges out of one incident. Whether two of them count as the same offense turns on the same-elements test from Blockburger v. United States, 284 U.S. 299 (1932), which Florida has codified at section 775.021(4). Under that test, two offenses are separate only if each one requires proof of an element the other does not. If one charge is fully contained within another, punishing both for the same conduct violates double jeopardy.
When Jeopardy Attaches
Double jeopardy does not apply until jeopardy has attached, and the moment depends on the kind of proceeding.
| Type of proceeding | Jeopardy attaches |
|---|---|
| Jury trial | When the jury is impaneled and sworn |
| Trial before a judge | When the judge begins to hear evidence |
| Guilty or no contest plea | When the court formally accepts the plea |
Mistrials and Retrials
A case that ends without a verdict does not always bar a second trial. When the defense asks for or agrees to a mistrial, or when there is a manifest necessity such as a jury that cannot reach a verdict, a retrial is usually allowed. The important exception is narrow: if a prosecutor deliberately provoked the defense into asking for a mistrial, double jeopardy can bar the State from trying again.
What Double Jeopardy Does Not Stop
The protection has real limits. It does not stop separate sovereigns from each bringing a case, so the State and the federal government can both prosecute the same act. It does not bar charges that rest on truly different acts or different victims, even within one event. And it does not prevent the State from seeking separate punishments where the Legislature has clearly authorized them.
Common Questions
Can I be charged twice for the same crime in Florida?
Generally no. After an acquittal or a conviction for an offense, double jeopardy bars a second prosecution for that same offense, and it also bars more than one punishment for the same offense.
Can I be charged with several crimes from one incident?
Often yes. Multiple charges from a single episode are allowed when each offense requires proof of an element the others do not, which is the Blockburger same-elements test codified at section 775.021(4), or when the Legislature has authorized separate punishments.
When does double jeopardy attach?
In a jury trial it attaches when the jury is sworn. In a trial before a judge it attaches when the judge begins to hear evidence. On a plea it attaches when the court formally accepts the plea. Before those points, jeopardy has not attached.
If my trial ends in a mistrial, can I be retried?
Usually yes. If you asked for or agreed to the mistrial, or there was a manifest necessity such as a hung jury, a retrial is generally allowed. A narrow exception applies when a prosecutor deliberately provoked the mistrial.
Can the state and federal government both charge me?
Yes. The State of Florida and the federal government are separate sovereigns, so a prosecution by one does not bar a prosecution by the other for the same act.
Related: Legal Defenses, Speedy Trial, Criminal Defense, and About Rory Safir.
This page is general information about Florida law, not legal advice, and it does not create an attorney-client relationship. Double jeopardy is guaranteed by the Fifth Amendment to the United States Constitution and Article I, Section 9 of the Florida Constitution, and the same-elements test is codified at section 775.021(4), Florida Statutes. Every case is different, and past results do not guarantee a similar outcome. The hiring of a lawyer is an important decision that should not be based solely on advertisements.
