The best way to prepare for a criminal trial is to expect the unexpected. Anything can happen and, when things go awry, sometimes a mistrial is declared. A mistrial is a trial that is terminated before a verdict can be reached. Here’s a look at some common grounds for a mistrial and what happens after the fact.
A mistrial may be declared for a number of reasons. One of the most common reasons for a judge to declare a mistrial is due to a hung jury. A “hung jury” is when a jury deadlocks after lengthy deliberations and can’t come to a unanimous decision on the defendant’s guilt or innocence.
A mistrial can also occur when there has been a fundamental injury to the rights of a defendant to have a fair trial. Reasons could include:
The prosecution or the defense can make a motion for a mistrial or a judge can declare a mistrial on their own initiative or sua sponte. If a judge denies a motion either side’s motion for a mistrial, the trial goes on.
Mistrials can be very emotional for the parties involved in the case. When a trial begins, people expect there to be some sort of resolution at the end. A mistrial, in essence, temporarily leaves the case in limbo until decisions can be made about how and when to move forward.
Depending on what prompted the mistrial, most cases will be retried again at a later date. This can benefit the defense. Because prosecutors must prove their case beyond a reasonable doubt, a mistrial might prompt prosecutors to reevaluate their case based on what they have seen of the defense’s hand. Some cases are resolved through a plea bargain to a lesser charge or even a dismissal.
The Double Jeopardy Clause of the Fifth Amendment to the U.S. Constitution prevents the government from prosecuting a defendant more than once for the same offense. However, most of the time double jeopardy doesn’t apply if a mistrial is declared. If the mistrial was prompted due to a hung jury or if the defense requested or consented to the mistrial, then double jeopardy doesn’t come into play.
However, there are instances in which double jeopardy will apply and the case will be barred from further prosecution. For example, if the mistrial was declared due to prosecutorial misconduct, over the objection of the defendant, or for no good reason, the state likely will not get a do-over.
It’s important to point out that most judges declare a mistrial only after careful consideration and in cases of absolute necessity.