Former Republican presidential candidate Nikki Haley has warned that a vote for Joe Biden in 2024 is effectively a vote for Kamala Harris if the president were to die of an age-related illness in office. Age has been a major factor in the 2024 presidential race, with Biden being the oldest president in history at 80 years old. Republicans are now weighing how far to push the issue in the 2024 campaign without alienating older Americans who tend to be dependable voters.