PHILADELPHIA — Meet the new Hillary Clinton, repackaged and updated from previous versions. She is being presented to Americans again at the Democratic convention in Philadelphia, this time as a barrier-breaking liberal champion who fights for families and children.

But some voters watching from the convention floor say they already know Clinton, and not all views are favorable. That presents a unique challenge for Clinton and her supporters as they try to reintroduce one of the country’s most visible women to voters who’ve been watching her for years.

Some of the reintroduction is more than cosmetic: Clinton moved left on issues including trade and education in the course of the primary campaign, adopting stances pushed by rival Bernie Sanders.