PolitiFact does not accept donations from political parties and advocacy organizations. Their website clearly articulates this policy.
As their site notes, "PolitiFact journalists avoid the public expression of political opinion and public involvement in the political process.
We don’t make political contributions or work on campaigns. We don’t sign online petitions, post yard signs, or participate in political marches.
We avoid expressing political views on social media. We do share news stories and other journalism, but we take care not to be seen as endorsing or opposing a political figure or position. We avoid snarky commentary.
We may participate in the political process as voters, because we also have responsibilities as individual citizens of the United States. But we keep our votes to ourselves as a matter of principle. Our goal is to be open-minded in all of our work."
The phrase "we don't" is not quite the same thing as "we do not allow," but the policy does appear to meet the spirit of the criterion and the compliance requirements for it.
2b marked as Fully compliant by Michael Wagner.