Exculpatory evidence is evidence that indicates that the defendant is innocent. Exculpatory evidence is the opposite of inculpatory evidence, which is evidence that indicates that the defendant is guilty.
If solid exculpatory evidence is presented during a criminal case, then it can be very beneficial for the defendant. However, it does not necessarily mean that they will be automatically voted not guilty.
There are many different types of evidence that could qualify as exculpatory. For example, a witness may attest to the defendant's alibi being legitimate. Also, fingerprints may be found at the scene of the crime that are not the defendant's. Furthermore, surveillance footage may show that someone other than the defendant committed the crime.
If a defendant wants to win a criminal case, then their attorney must present enough exculpatory evidence to prove that they did not commit the crime.