Received the affidavit.
Contrary to the published version of Mr Davis' filing HERE, it seems he accepted a nomination by the Michigan Democrat party. While writing this, the copy of the Democrat nominations arrived for verification. He was indeed officially nominated by the Democrat party. There can be no challenge to his ability to run.
However, he does not meet the incumbency rule in the state constitution as he should not file as incumbent because of his short term less than 180 days.
The thing that drew my attention to this originally, is how it is strange that Denise Langford, is SHOWN as the only NOMINATED SC candidate by Democrats on the candidate roster for the state.
The constitution on this issue has an interesting sidebar by the way.