What the Taylor Swift endorsement of Kamala Harris means for the November election

Democrats believe Taylor Swift's recent endorsement of Vice President Kamala Harris could encourage more young voters to turn out in November, but recent polling indicates the pop star's support might not greatly affect voter decisions at the ballot box.

Swift, an outspoken critic of former President Trump, endorsed Harris after the presidential debate Tuesday. In an Instagram post that she signed "childless cat lady," the pop icon said Harris "fights for the rights and causes I believe...