Not giving any credit to Arleen. It is the two that decided to elevate him over Toomey, whose motives I am curious about.
But generally nothing is quite so simple as it appears.
Now, prior to the General Election, the ideological drive of the campaign was not as clearly evinced as it was toward the close.
In the End Bush was making naked appeals to Democrats of a more conservative mind, than his opponent could.
Supporting Arleen, even considering his roots, does not fit with that end game in mind. In Fact, supporting him in the end might have made it harder for the very people they were basing their run on, to support them.
Proeceeding, it is clear that neither The President, nor the Evil Genius behind the curtain leave such matters to happenstance.
So, If the picture doesn't quite fit, it is only wise to ponder why that is.
i see your point about the rationale for W's support of him, but arleen cannot possibly sink too low. they may have kept him for the majority # and intended to cut him out if need be. i guess we will see.