Taylor Swift endorses Kamala Harris for president in post signed ‘Childless Cat Lady’  BBC.comTrump surrogate Elon Musk sends creepy tweet to Taylor Swift as campaign goes beyond weird  USA TODAYSwift surge for Harris? Political world weighs impact of star’s endorsement  The HillBefore Taylor Swift’s endorsement, a Tennessee poll measured her influence  AxiosTaylor Swift has endorsed Kamala Harris for president — will it matter?  NPR