The ones I'm most worried about are Finchem, Karamo and Lake
Don't forget about Marchant in Nevada.
There is a general trend this year of Republicans doing better in downballot races than at the top of the ticket, or there being more support for "Generic R" than for any particularly specific Rs. In Michigan I think polls have Karamo doing worse than Dixon, but DePerno (!) doing better, in spite of his issues (to the point that under normal polling error he's probably favored; this might be because Nessel is unusually controversial, though), but there are other states -- particularly AZ and NV -- where basically every poll has shown downballot Republicans doing better than the top of the ticket, even though those downballot Republicans are ideologically pretty far out there.
