I answered my own question, it appears that it was expected that Thompson would make a statement at the Wisconsin State Republican gathering last weekend, and he didn't.
There appears to be some who think he is going to challenge Kohl in which case he will likely WIN an important seat for the GOP.
Others believe he is setting himself up as a Veep pick by showcasing his popularity in WI (and also MN, and MI).
I have no idea which is true, and I'll make the change if and when Thompson enters the race. I would guess that Thompson vs. Kohl would be a 60% chance GOP-- agree?