Former Vice President Joe Biden and Sen. Kamala Harris (D-Calif.) posed for a photo together in Washington, D.C., amid speculation that both politicians will launch White House bids.

Harris’s communications director, Lily Adams, tweeted the photo Wednesday afternoon, writing: “You just never know who you might run into in DC….”

You just never know who you might run into in DC…. pic.twitter.com/wJgYuC1q0F

— Lily Adams (@adamslily) December 12, 2018

{mosads}Biden and Harris are both considered potential candidates to challenge President Trump in 2020, with Biden repeatedly topping polls — something that in part reflects his high name recognition among the public.

Harris said earlier this month that she will make a decision on a 2020 run with her family “over the holiday.”

Biden also reportedly said  he plans to discuss a bid with family members over the holidays.

Replies to Adams’s tweet showed that social media users would be on board with a hypothetical Biden-Harris ticket.

“Something tells me this is going to be a historic photo,” wrote one Twitter user.

“Please let that be the 2020 ticket,” wrote another.

Something tells me this is going to be a historic photo.

— Rich Jones (@Joneso1978) December 12, 2018

Please let that be the 2020 ticket

— This Is Not Normal (@NetworkJunkyz) December 12, 2018

Now that’s a team!

— Jimmy (@ThePatriotsGame) December 12, 2018

I’d vote for that ticket!

— (((513eats))) (@513eats) December 12, 2018

Other potential Democratic candidates, including Rep. Beto O’Rourke (Texas) and former Florida governor candidate Andrew Gillum (Fla.), have reportedly met with former President Obama in recent weeks.