The 16 defendants each face eight felony counts for allegedly representing themselves as Michigan’s electors in 2020.
Prosecutors say they signed a document claiming to cast their votes for Trump and then sent it to Congress and the National Archives.
Some of the group, including former Michigan Republican Party co-chair Meshawn Maddock and Wyoming City Mayor Kent VanderWood had already plead not guilty.
Now, the others have joined them.
Each was granted a personal recognizance bond, meaning they’re free to move about the state but need a judge’s permission to leave.
Some are due back in court next week.