In establishing Legislative district boundaries: (1) No apportionment plan or district shall be drawn with the intent to favor or disfavor a political party or an incumbent; and districts shall not be drawn with the intent or result of denying or abridging the equal opportunity of racial or language minorities to participate in the political process or to diminish their ability to elect representatives of their choice; and districts shall consist of contiguous territory. (2) Unless compliance with the standards in this subsection conflicts with the standards in subsection (1) or with federal law, districts shall be as nearly equal in population as is practicable; districts shall be compact; and districts shall, where feasible, utilize existing political and geographical boundaries. (3) The order in which the standards within sub-sections (1) and (2) of this section are set forth shall not be read to establish any priority of one standard over the other within that subsection.
The point of realignment by the RNC was to do exactly what happened. Force West out. He's liked by the TEA party...therefore Rence Pribus and the rest of the establishment decided he had to go.
He wasn't the only one they tried to do it to...just the only one they succeeded with.
How secure is Pribus' job as RNC chair, following the election? Steele got fired from that job and he didn't screw up half as badly. Even if the Tea Party is only 30% of the GOP (and I'm not saying it's not a larger percentage), it's probably enough to replace him with somebody more in touch with the Tea Party. A lot of republicans who aren't necessarily Tea Party people still don't like losing elections.