Problem is that Trump hasn’t actually been convicted of insurrection, which is the necessary legal basis for such a ruling.
Citation needed. Maine’s Secretary of State fully addressed this exact topic. There is no language in the constitution or the amendment that says they must have been charged or convicted of insurrection and the SoS makes a pretty solid argument that she’s bound by her duties to make a call on the matter. She used the official Jan 6th hearings as an evidence-based proceeding while acknowledging that it was curated with intent and needs to be put in that context. She did stay her decision until higher courts ruled on the matter.