A moderate congresswoman is attracting both scrutiny and admiration for a video of her speaking, reviving questions about sexism in politics.

In the heated primary, Abdul el Sayed has largely led Rep. Haley Stevens in the polls by single digits. He led in this survey by a 10-point margin.

As Haley Stevens and Abdul El-Sayed vie for the Democratic nomination, voters are debating which way the party should go: establishment or insurgent; progressive or more moderate;…