Democrats kick their bad apples out rather decisively and swiftly (see how fast Eric Swalwell and Graham Platner dropped out).
Republicans remain silent on wife/daughter beater just because they want to remain power and every seat matters to them. (See Bernie Moreno staying silent on his own daughter and grand daughter getting abused by Max Miller, and Max Miller still is an active senator.)
I am not a Dem or a GOP. I am just in favor of the doing the right things.
The Republican Party has become so pathetic under Donald Trump's control. But of course, they won't do anything to rid themselves of the evil.