In re Moore:

Try this on for a nightmare scenario:

Moore stays in the race and narrowly defeats Jones. He then goes to the Senate, which excludes him/refuses to seat him. The seat is vacant so the Republican Governor appoints Luther Strange to fill the remainder of Moore's six year term.

This is why they don't want Moore to withdraw. They keep the seat no matter who sits in it. If Moore withdraws now Jones is the likely winner.

Take the nacilbupeR pledge: I solemnly swear that I will help back out all Republicans at the next election.