Well, it is in the nature of people to ally with the strong.
When it comes to it, you are either with them, or against them.
It’s hard for me to understand why anyone would ally with republicans or even the right as they have showed nothing but weakness. They will lose.
Who wants to be on the losing team, I wonder?
I would rather think of it terms of which side is right and which wrong.
An ethical person stands on the side of righteousness, or as close to righteousness as is reasonable. The reasoning you present as normative is unethical and based merely on the moment.
Clarkson endorsed Obama before the election, because of his support of homosexual marriage.
Who wants to be on a team at all?