I’d say this nails it:
Four stages of GOP scandal response:
1. As the father of a daughter, I'm outraged.
2. If the allegations are true, he should step down.
3. While I have my differences with him, I support my party's nominee.
4. Look, I'm focused on tax cuts.
— Ken Schultz (@KSchultz3580) November 9, 2017
A good interim step is to follow the Ted Cruz path of telling Republicans to “vote their conscience,” therefore earning yourself lots of praise for putting country above party from gullible pundits while leaving yourself free to support the Republican candidate if it looks like he can win without even contradicting yourself.