McCain would be wise to pick someone other than an evangelical...
Conservative yes. Evangelical no. Jeb Bush no. Rush Limbaugh no.
He'll have a tough time finding someone who will "bring the party together" no matter who he chooses. However the individual must meet one over-riding test: He must be "Presidential" in his own right.
On second thought, maybe Huckabee could be it...But that leaves the fiscal conservatives in the lurch...