If Europe is watching with a mix of apprehension and curiosity as the race for the US presidency unfolds, it is no less intrigued by the candidates’ running mates, who would serve as vice presidents. The role, once primarily administrative, has evolved significantly over time, becoming a critical stepping stone for future presidents like Joe Biden and George H. W. Bush, and high-profile presidential candidates such as Al Gore and Kamala Harris. Historically, vice presidents have been seen as principal advisors to the president. Some, like Dick Cheney under George W. Bush and Joe Biden under Ba…