Advisers to former Vice President Joe Biden Joe BidenBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Democratic groups using Bloomberg money to launch M in Spanish language ads in Florida Harris faces pivotal moment with Supreme Court battle MORE have reportedly floated the idea of him teaming up with a younger running mate if he ran for president in 2020, potentially including Rep. Beto O’Rourke (D-Texas).

The Associated Press, citing people speaking on the condition of anonymity, reported the scenario Friday while noting that current and past advisers have discussed having Biden team up with a younger running mate to alleviate concerns about his age.

Biden would be 77 years old on Election Day in 2020 and would be the oldest president ever elected if he won. He has said he is considering launching another White House bid to take on Trump in two years, and is expected to face a crowded Democratic field.

Democrats have sought in recent years to appeal to younger voters, especially women, as well as people of color, though have also weighed the best strategy for 2020 to take on Trump, who was elected after winning over white, working-class voters in the Midwest.

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The Democratic presidential field is also expected to include a diverse crop of candidates, including a number of women and minority politicians with a wide range of ages.

Biden selecting O'Rourke, 46, would afford him a younger running mate but would also mean having a white all-male ticket.

A Biden spokesperson declined to comment, and O’Rourke’s office did not immediately respond to a request for comment from The Hill.

Ronald Reagan was the oldest person to be elected president at 73, while President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE was 70 when he was elected.

Biden is expected to make a decision on whether to run in the coming months.

O'Rourke, a three-term congressman, has not ruled out a potential presidential bid of his own after coming within 3 points of defeating Sen. Ted Cruz Rafael (Ted) Edward CruzCruz blocks amended resolution honoring Ginsburg over language about her dying wish Trump argues full Supreme Court needed to settle potential election disputes Press: Notorious RBG vs Notorious GOP MORE (R) in Texas last month.

While initially ruling out a 2020 campaign, O’Rourke has appeared to reconsider after running an unusually tight Senate race in the staunchly Republican Lone Star State and igniting enthusiasm among Democratic voters and individual donors.

The crowded 2020 Democratic primary field is likely to include several candidates in their 40s and 50s, including O’Rourke, Sens. Kamala Harris Kamala HarrisHarris faces pivotal moment with Supreme Court battle Nearly 40 Democratic senators call for climate change questions in debates Joe Biden has long forgotten North Carolina: Today's visit is too late MORE (D-Calif.), Cory Booker Cory Anthony BookerBipartisan praise pours in after Ginsburg's death DHS opens probe into allegations at Georgia ICE facility Democratic lawmakers call for an investigation into allegations of medical neglect at Georgia ICE facility MORE (D-N.J.), Kirsten Gillibrand Kirsten GillibrandSunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election Suburban moms are going to decide the 2020 election Jon Stewart urges Congress to help veterans exposed to burn pits MORE (D-N.Y.), Amy Klobuchar Amy KlobucharSocial media platforms put muscle into National Voter Registration Day Battle lines drawn on precedent in Supreme Court fight Sunday shows - Ruth Bader Ginsburg's death dominates MORE (D-Minn.), Montana Gov. Steve Bullock (D) and Obama Housing Secretary Julian Castro.

Other figures who are weighing potential bids include Vermont independent Sen. Bernie Sanders Bernie SandersOutrage erupts over Breonna Taylor grand jury ruling Dimon: Wealth tax 'almost impossible to do' Grand jury charges no officers in Breonna Taylor death MORE, 77, and Massachusetts Democratic Sen. Elizabeth Warren Elizabeth WarrenDimon: Wealth tax 'almost impossible to do' CNN's Don Lemon: 'Blow up the entire system' remark taken out of context Democrats shoot down talk of expanding Supreme Court MORE, 69.

Biden spent 36 years in the Senate and eight years as vice president to former President Obama, who remains popular among the Democratic base.

At an event in Montana this month, Biden described himself as “the most qualified person in the country to be president.”

“The issues we face as a country today are the issues that have been in my wheelhouse, that I’ve worked on my whole life,” he said.