When it comes to a White House bid in 2020, though, he has sent mixed signals, noting that he currently has no plans to mount a campaign. And Biden’s age — he’ll be 78 by Inauguration Day in 2021 — would make him by far the oldest president ever.

Still, Biden’s busy recent schedule of events and appearances suggests he hasn’t entirely ruled out another bid.

Biden has attended a hedge fund conference in Las Vegas and a fundraiser for New York Gov. Andrew Cuomo (D). His jam-packed calendar also includes upcoming speeches at the Florida Democratic Party and at a few college commencements. Biden will also receive an award at the Democratic National Committee’s (DNC) LGBT Gala next month.

But the appearance that drew the loudest buzz was Biden’s speech last month at a state party dinner in New Hampshire — a critical early state in the presidential primary circuit. During his speech, Biden sought to tamp down the 2020 rumors.