I'm a Christian and I vote Democrat most of the time... because they usually have the better person for the job IMHO.
FWIW I don't check the religious affiliation of my doctor, electrician, gardener, etc. either.
Sorry for not falling in line with you Christian stereotypes.
Also interesting that you are all commenting on a book no one has even read yet but I suppose your superpowers that allow you to know what all Christians think and do also works is in knowing what is in a book before you have read it.