How is Mike Roger's district going to be gerrymandered since Livingston County (I think that he is from there) probably gained in population or is at least stable?  There are strict rules in Michigan about re-districting that must be followed such as following countty lines, city lines, etc.  Usually the plan that follows the rules best is the one that becomes law (after the expected Michigan Supreme Court challenge).  So the GOP should make sure that they don't disagree with those lines as little as humanly possible.