[tptacek]

No it isn't. A 501c3 can't participate directly in a campaign. That's it, that's the whole rule. Plenty of 501c3's are nakedly and openly partisan. Center For American Progress is a c3. Heritage is a c3. AEI is a c3. Claremont is a c3.

[caseysoftware]

I didn't say "partisan"

Again, I encourage you to read Patrick's post, specifically the section titled "July 2021: The CTT coalition attempts non-partisan interdiction of Trump PAC fundraising" where it describes their direct involvement against a single, specific candidate's PAC.

You could make the claim "well, technically he wasn't a candidate at that time" but considering the PAC was a registered FEC entity raising money for campaign rallies, that argument is weak at best and absurd in reality.