The Supreme Court ruled unanimously Monday to overturn Colorado supreme court decision removing Trump from the state primary ballot, just one day before voters in the Centennial State and 14 others go to the polls to select their Republican nominee.

The unanimous ruling holds that only Congress has the authority to restrict ballot access based on a candidate’s alleged violation of Section three of the 14th Amendment of the Constitution, which prohibits individuals who have engaged in an insurrection from holding federal office.

The ruling also ensures that Trump’s name will appear on primary ballots in Illinois and Maine, overturning disqualification orders by state officials.