The legal challenge by Colorado voters to disqualify former President Donald Trump from the ballot was met with a cold reception at the Supreme Court on Thursday, leaving open the question of whether the nine-member court may find unanimity.

To secure a strong 9-0 ruling from the justices, Trump’s attorneys will need to sway the six Republican-appointed and three Democratic-appointed justices to unite in finding that he can remain on the ballot in the pivotal 14th Amendment challenge.