Don’t do it, Stacey Abrams. It’s a terrible idea.

Now that it appears all but inevitable that Joe Biden is going to enter the 2020 presidential race, he is reported to be considering announcing at the outset that he has already selected the former Georgia House minority leader to be his running mate.

Axios’s Mike Allen, who broke the story Thursday, quoted a source close to Biden as saying the dramatic pick of an African American woman who is a rising star in the Democratic Party would show that the former vice president “isn’t just another old white guy.”

It is easy to see why Biden would find the idea appealing, presumptuous as it is. What is harder to understand is why Abrams would accept such an offer if Biden were to make it.