Pop superstar Taylor Swift took to Instagram Tuesday night to endorse Vice President Kamala Harris’ presidential bid, potentially activating her army of Swifties to head to the polls in November. “Like many of you,

Only 8% of Americans say Taylor Swift’s recent endorsement of Vice President Kamala Harris makes them more likely to vote for Harris in November, according to a new Yahoo News/YouGov poll. But the poll also shows how Swift’s endorsement could help the Democratic nominee turn out at least one key group of voters: unregistered Americans who like