I don't know if there is or not, but I treat it like I do prayer; it can't hurt. So, here goes!
I hope that instead of throwing her completely inexperienced hat into the ring, Oprah will use her massive wealth and influence to propel a qualified candidate to the forefront in 2020. I think Georgia gubernatorial candidate Stacey Abrams would be an excellent choice, or maybe Senator Cory Booker. I believe that most democrats understand that being a wealthy celebrity isn't a relevant qualification for president.
It is interesting that you meet two types of people when you tell them something they didn't know. One type says "I didn't know that." The other type says "No it's not." Most people are of the second type.