Again, this is purely hypotehtical, and in no way is wishing to see Senator Johnson incapacitated or on his death bed. Besides simple common human concern, as a medical professional, my position will always be in support of a complete recovery.
If the poll allows for comments, by all means, please add the "why" to any option you choose, that doesn't follow both legal & historical precedent. Legally, as Bt has indicated, the governor can appoint whomever, and historically, when Dems gained a 50/50 in the Senate, during Bush's 1st tenure, they demanded and received co-chairmanships.
So what-say-you folks?