Motions for Joinder and Severance in Minnesota

The Problem With Trying Everything Together

Prosecutors often prefer one trial covering several charges or several defendants — it's efficient and can let evidence on one count color the jury's view of another. But that efficiency can come at the cost of fairness. Two recurring concerns drive severance motions:

• Multiple charges: When unrelated offenses are tried together, the jury may use evidence of one as improper propensity proof for another, or simply conclude that someone facing many charges must be guilty of something.
• Multiple defendants: When co-defendants are tried together, one defendant can be prejudiced by evidence admissible only against another, by a co-defendant's statement, or by antagonistic defenses where each blames the other.

When Charges Should Be Tried Separately

Minnesota looks at whether offenses arose from a single behavioral incident and at the prejudice of trying them together. Offenses that are genuinely related and part of one course of conduct may properly be joined; unrelated offenses that would invite propensity reasoning are better severed. This connects to the single behavioral incident rules that also affect sentencing.

When Co-Defendants Should Be Severed

Severing defendants may be warranted when a joint trial would unfairly prejudice one of them — for example, where a co-defendant's confession implicates the other, or where the defenses are so antagonistic that the jury is effectively asked to pick a culprit between them. The court weighs fairness against the efficiency of a single trial.

Why It Matters

The structure of the trial shapes what the jury hears and how it reasons. A defendant tried alone, on one charge, with only the evidence relevant to that charge, stands in a very different position than one tried alongside several charges or co-defendants. Getting that structure right is often a quiet but important defense victory.