Do celebrity endorsements make a difference in elections?

Music superstar Taylor Swift has endorsed vice president Kamala Harris for US president following her debate with Republican rival Donald TrumpBut, how important are celebrity endorsements? And, do they make a difference when it comes to elections?   Guest presenter Clare McKenna chats to Stephen O'Leary, Founder of Online News Media and Social Media Monitoring and Analysis company Olytico Image: Taylor Swift performing on stage at the Aviva Stadium in Dublin, 28/06/2024. PA Images / Alamy Stock Photo