In interviews over the last month with about three dozen Democratic voters, many in early primary states, almost all of them expressed far more interest in Ms. Warren’s policy ideas than her ancestry and said that they were exhausted or uninterested by the story line. They described it as overblown, reflecting a disconnect between voters in the party’s base and some political elites, media commentators and conservatives who have been preoccupied with the issue.

“Right now is a time to listen to ideas,” said Holly Sauers, a staunch Democrat and resident of Charleston, S.C. “That’s what we’re focused on.”

Among these voters, who were mostly white and black Democrats who acknowledged their own misunderstandings about Native American communities and history, Ms. Warren is not a perpetrator of harm, but a victim of a Washington culture that delights in any scandal among politicians — and particularly elected officials who are women.