A weeklong hearing on one lawsuit to bar Trump from the ballot in Colorado begins Monday, while on Thursday oral arguments are scheduled before the Minnesota Supreme Court on an effort to kick the Republican former president off the ballot in that state.

Whether the judges keep Trump on the ballot or boot him, their rulings are likely to be swiftly appealed, eventually to the U.S. Supreme Court. The nation’s highest court has never ruled on the Civil War-era provision in the 14th Amendment that prohibits those who swore an oath to uphold the constitution and then “engaged in insurrection” against it from holding higher office.