Just under a fifth of Americans believe Taylor Swift is part of a conspiracy to help Joe Biden win re-election in November, a new poll found this week. The global pop star has been a regular feature at NFL games since September, when she was first spotted linking arms with the Kansas City Chiefs tight end Travis Kelce. Before the Chiefs won the Super Bowl on Sunday, rightwing commentators had suggested the championship was rigged by the Biden administration and Swift was secretly helping in order to sway the election in November. So where did this conspiracy theory come from? Why are conservatives so obsessed with Swift? And did the Biden team do the right thing by jokingly feeding the conspiracy? Jonathan Freedland speaks to Nikki McCann Ramírez of Rolling Stone magazine to try to figure it out