- The 2020 Democratic primary field is one of the most diverse in history in terms of age.
- Mayor Pete Buttigieg, 37 and Rep. Tulsi Gabbard, 38 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. Former Vice President Joe Biden, Sen. Elizabeth Warren, and Sen. 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 turns 77 on November 20, 2019.
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.
Buttigieg, 37 and Rep. Tulsi Gabbard 38, are both 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 78, 79, and 71, respectively.
Here's a breakdown of the 2020 Democrats' age and how old they would be at a potential inauguration.
SEE ALSO: POWER RANKING: Here's who has the best chance of becoming the 2020 Democratic presidential nominee
Mayor Pete Buttigieg is currently 37, and would be 39 years and 1 day old upon taking office.
Read more about Pete Buttigieg's campaign.
Rep. Tulsi Gabbard is currently 38 years old, and would be 39 years and 283 days old upon taking office.
Read more about Tulsi Gabbard's campaign.
Andrew Yang is currently 44 years old, and would be 46 years and 7 days old on Inauguration Day.
Read more about Andrew Yang's campaign.
Former HUD Secretary Julian Castro is currently 45 years old, and would be 46 years old and 126 days upon taking office.
Read more about Julian Castro's campaign.
Sen. Cory Booker is 50 years old. If elected, he would be 51 years old and 268 days when assuming office.
Read more about Cory Booker's campaign.
Gov. Steve Bullock of Montana is 53. He would be 54 years and 284 days old on Inauguration Day.
Read more about Steve Bullock's campaign.
Sen. Michael Bennet of Colorado is 54. He would be 56 years and 53 days old upon taking office.
Read more about Michael Bennet's campaign.
Sen. Kamala Harris is 55 years old, and would be 56 years and 92 days old upon taking office.
Read more about Kamala Harris' campaign.
Rep. John Delaney is 56, and would be 57 years and 249 days old when taking office.
Read more about John Delaney's campaign.
Sen. Amy Klobuchar is 59. She would be 60 years old and 240 days old on Inauguration Day.
Read more about Amy Klobuchar's campaign.
Billionaire activist Tom Steyer is 62 years old. He would be 63 years and 207 days old on Inauguration Day.
Read more about Tom Steyer's campaign.
Former Governor Deval Patrick of Massachusetts is currently 63 years old. He would be 64 years and 173 days upon taking office.
Read more about Deval Patrick's campaign.
Marianne Williamson is 67 years old, and would be 68 years and 196 days upon taking office.
Read more about Marianne Williamson's campaign.
Sen. Elizabeth Warren is currently 70. She would be 71 years and 212 days upon taking office in 2021.
Read more about Elizabeth Warren's campaign.
Former Vice President Joe Biden is 77 now, and would be 78 years and 61 days old on Inauguration Day 2021.
Read more about Joe Biden's campaign.
Former Mayor Michael Bloomberg of New York City is also 77 years old. He would be 78 years and 341 days old upon taking office.
Read more about Michael Bloomberg's campaign.
Sen. Bernie Sanders is currently 78. He would be 79 years and 134 days old upon assuming office.
Read more about Bernie Sanders' campaign.
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