Do not construe this post as an endorsement for Oprah Winfrey to be the Democratic nominee for president in 2020. I have not made up my mind whether I would (or could) support her in the Democratic primary.
But there has been a lot of chatter in social media about her running for president (and some of her associates say she is thinking about doing so). This poses an interesting question -- who would win a race where Oprah Winfrey ran against Donald Trump?
The Rasmussen Poll asked that question of a random national sample of 1,000 likely voters (with a 3 point margin of error). The results are shown in the chart below (and those results won't make Trump very happy). Among all likely voters, Oprah beats Donald by 10 points.