Vice President Joe Biden, the current frontrunner for the Democratic nomination for president, said he’s going to pick a female running mate.

It’s a popular idea. Four in five (80%) Democratic voters approve of his commitment – 74 percent of male and 84 percent of female Democratic voters, according to The Economist/YouGov Poll, the first since Biden made the pledge on the Democratic debate stage in March.

One woman emerges as a clear choice: Massachusetts Senator Elizabeth Warren. Warren draws the most spontaneous mentions when Democratic voters are asked to volunteer a choice for vice president, and she is also at the top of the list when Democratic voters are asked to choose among the four women most frequently mentioned as vice-presidential candidates and Vermont Senator Bernie Sanders.

Warren leads in every age group, and with both men and women. She is well ahead with liberals, while moderate and conservative Democratic voters have no clear favorite. Warren had been the most popular of the Democratic candidates when Democratic voters were asked their overall opinion of the candidates in Economist/YouGov Polls.

That is still true, though now Biden, the frontrunner, also scores high favorability among Democratic primary voters. About three-fourths (74%) of Democratic primary voters have a favorable opinion of Warren, and a similar number (73%) have a favorable opinion of Biden.

Presidential politics

Related: Most Americans don’t trust President Trump for accurate COVID-19 information says CBS/YouGov Poll

See the toplines and crosstabs from this week’s Economist/YouGov Poll

Image: Getty