Please READ section 3 of the 14th Amendment.
It is a LEGAL matter, not a political matter.
The court can rule on Legal matters, not the voters.
Section 3: No person shall be a Senator or Representative in Congress, or elector of President and Vice-President, or hold any office, civil or military, under the United States, or under any State, who, having previously taken an oath, as a member of Congress, or as an officer of the United States, or as a member of any State legislature, or as an executive or judicial officer of any State, to support the Constitution of the United States, shall have engaged in insurrection or rebellion against the same, or given aid or comfort to the enemies thereof. But Congress may by a vote of two-thirds of each House, remove such disability.
The above Section 3 clearly describes how Trump can be disqualified by a court of law.
There is NO CONVICTION of insurrection required.
None of the Confederate Generals, Soldiers, or their President had been CONVICTED of insurrection either. Election is a matter for each state. Therefore, each state's Supreme Court is within legal jurisdiction to disqualify any candidate that fits the description of Section 3.
If we don't abide by our Constitution, then what kind of a kangaroo country are we?