The voice is familiar, identifiable within the first few syllables. But the woman on screen, sporting a bright pink blazer and 1979-era Coke-bottle glasses, is not, at least at first. “One of the areas that I’ve been particularly interested in is the area of children,” she says.

By the fourth clip, though, there is no mistaking her: This is Hillary Clinton, as first lady, giving a speech about the importance of children and families.

Message

Previous Clinton advertisements relied on a male narrator to tell Mrs. Clinton’s story. Now she does so herself. Through 11 video clips in 60 seconds, we watch Mrs. Clinton age, her hairstyles evolve, and her diction take on and then lose an Arkansas twang. But despite the passage of 37 years, she seems to be delivering the exact same speech on a single topic: children and families. It is powerful proof of an extensive record. Moreover, it is a sharp rebuke to those who marvel at how Senator Bernie Sanders has been saying the same thing throughout his career or suggest that Mrs. Clinton is more prone to adjusting her politics to fit the moment.

Response

Mrs. Clinton and Mr. Sanders have been trading attack ads over the past week. Mr. Sanders released one insinuating that Mrs. Clinton was beholden to Wall Street because of her acceptance of “millions in campaign contributions and speaking fees.” She countered with an ad criticizing ideas that “sound good on paper but will never make it in the real world.” This commercial, “Children,” interrupted the slew of “contrast” ads with a positive message that stood in contrast with anything else on the air.