AP Photo/Matt Rourke
Former Vice President Joe Biden
- The 2020 Democratic primary field is one of the most diverse in history in terms of age.
- Mayor Pete Buttigieg, 37, Reps. Tulsi Gabbard and Eric Swalwell, 38, and Rep. Seth Moulton, 40, are all attempting to overtake Teddy Roosevelt's status as America's youngest president.
- President Donald Trump holds the title of oldest president in history, taking office at 70 years and 220 days old. Joe Biden, Elizabeth Warren, and Bernie Sanders could all break his record if elected.
- Here are the ages of 2020 Democratic candidates, and how old they would be upon taking office on Inauguration Day 2021.
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Former Vice President and US Senator Joe Biden formally entered the 2020 Democratic primary on April 25.
Biden, who initially served as a county executive in Delaware in 1970 before being elected to the Senate in 1972, has been in elected office longer than eight of his fellow Democratic primary contenders have been alive.
The 2020 field is one of the most diverse in history in terms of age, which has become a focal point for 2020 Democrats. 37-year-old Mayor Pete Buttigieg, for example, is partially centering his campaign around the theme of intergenerational justice, arguing a new generation of leadership can solve the problems facing America.
The US constitution mandates that a candidate must be 35 years of age to be eligible for the presidency. The youngest-ever president was Theodore Roosevelt, who took office at 42 years and 322 days old in 1901.
Read more: Americans' ideal presidential candidate is a lot younger than Bernie Sanders, Joe Biden, or Trump
Buttigieg, 37, Reps. Tulsi Gabbard and Eric Swalwell, 38, and Rep. Seth Moulton, 40, are all attempting to overtake Roosevelt's record as America's youngest president.
President Donald Trump holds the title of oldest president in history, taking office at 70 years and 220 days old.
But three of the top candidates in the Democratic primary field could break his record.
Biden, Sen. Bernie Sanders, and Sen. Elizabeth Warren would be the oldest presidents in history if elected, hypothetically taking office at ages 71, 78, and 79, respectively.
Here's a breakdown of the 2020 Democrats' age and how old they would be at a potential inauguration.