[rhinohunter]

I believe Wyoming law requires the Governor to choose from a list of 3 nominees from leaders of the deceased Senator’s party.

I suspect he will pick -- not necessarily the least conservative of the three -- but the one among the three is the least electable.

[labard1]

You are almost certainly correct, but even a weak Republican (picked from a list of 3) is still better than having a Dim vote in the Senate until the next election.