Story highlights The new poll however is not all good news for fans of Oprah Winfrey

The survey follows a week where a Winfrey speech launched presidential speculation

(CNN) A new poll shows Oprah Winfrey with a double-digit lead over President Donald Trump in a would-be 2020 general election race, with 50% support to his 39%. About one-in-ten voters are undecided.

But it's not all good news for Oprah fans. The NPR/NewsHour/Marist survey found that 54% of voters said they did not want to see her enter the presidential fray. Only 35% favored a bid. That number is a bit higher among Democrats, at 47%, but hardly suggests a gimme of a primary race.

Trump's numbers in a potential matchup with Winfrey, who launched Oprahmentum with a stirring speech at Sunday night's Golden Globes, fall in line with his mostly dire approval ratings, which, according to Gallup, was at 37% last week.

Winfrey would start a campaign, which she's said to be "actively thanking" about, but not actively pursuing, with a 64% approval rating and less than a quarter of voters with an unfavorable take. Numbers that strong would likely take a hit once Winfrey started asserting policy positions.

The poll's partisan breakdown offers a more familiar picture. Not even the odd specter of a Trump-Winfrey celebrity showdown could pry voters off their poles. Winfrey has the support of 91% of Democrats, while Trump would have the backing of 85% of Republicans.

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