Sen. Elizabeth Warren of Massachusetts is the only woman polling at or near the top of the 18-person Democratic field, but the contest is far from settled. For the fifth Democratic debate held Wednesday in Atlanta, Warren was joined onstage by Sens. Amy Klobuchar (Minn.) and Kamala D. Harris (Calif.) and Rep. Tulsi Gabbard (Hawaii). Marianne Williamson, a self-help author and speaker, did not qualify for the debate, but has not dropped out of the race. Sen. Kirsten Gillibrand (N.Y.) ended her campaign for the nomination in August.

Stacey Abrams, the Georgia Democrat who profile has risen on the national stage with her strong performance in last year’s race for governor, has said she would be “honored” to be considered for vice president by the eventual nominee.

Harris and Warren have said that if they won the nomination, they would be open to choosing a female running mate. In 2016, Clinton considered making Warren her running mate, but in the end she chose Sen. Tim Kaine of Virginia.

Joel K. Goldstein, a professor of law at Saint Louis University’s School of Law, said an all-female presidential ticket is inevitable.