It looks to me like Bush is going to carry out his campaign statement, to name new Justices and a new Chief, "like Scalia and Thomas." I think that will include naming Scalia to replace the Chief.
When you lean back in your chair and think, Einstein's way of making discoveries BTW, the process becomes remarkably simple. See below.
Congressman Billybob
He is no doubt a conservative, but I'm not sure how rock solid he is thought to be.
Perhaps some Texans could enlighten us.