Apparently, the Colorado Republican Party does not dispute that Donald J. Trump "engaged in" an insurrection on January 6, 2021.
That's interesting. Perhaps astounding. Or perhaps they just don't want the U.S. Supreme Court to officially agree as much.
In asking SCOTUS to overturn the Colorado Supreme Court decision, in Anderson v. Griswold --- which directed the CO Secretary of State not to place the name, Donald J. Trump, on the Colorado Republican Presidential Primary Ballot --- the CO GOP, in its Petition for Writ of Certiorari, failed to contest the factual findings, initially made by a trial court and later upheld by the CO Supremes, that what took place on January 6, 2021 was an "insurrection" and that former President Donald J. Trump "engaged" in that insurrection.
(Those currently uncontested findings also provided the basis for the administrative law ruling [PDF] issued by Maine Secretary of State Shenna Bellows on Thursday, determining that the name Donald J. Trump may not appear on Maine's Republican Presidential Primary ballot.)
Instead, the CO GOP confined its legal arguments to (1) whether a "President falls within the list of officials subject to disqualification under §3 of the 14th Amendment", (2) whether §3 is "self-executing", and (3) whether a court-ordered disqualification violates the Party's First Amendment right of association.
As observed by Harvard's constitutional scholar, Lawrence Tribe, the claim that a President is not an "officer" subject to §3 disqualification is "as baseless textually as it is off base intuitively."
The 1st Amendment right of association argument is also remarkably weak.
The U.S. Constitution mandates anyone running for President must be at least 35-years old at the time they enter office. If a refusal to place the name of a 25-year old on a Presidential primary ballot doesn't violate 1st Amendment associational rights, then surely the refusal to place the name of someone disqualified by reason of §3 of the 14th Amendment doesn't violate the 1st Amendment either.
Nonetheless, despite weak arguments, absent a swift SCOTUS denial of cert, it's likely the name Donald J. Trump will appear on the CO Republican Primary ballot...