WATCH: Joe Biden Calls Senator Kamala Harris ‘President-Elect’

Joe Biden had another gaffe on Tuesday when he accidentally referred to Kamala Harris as the “President-Elect.”

Biden committed the mistake while giving a speech on COVID-19 from Wilmington, Delaware.

“I took it to instill public confidence in the vaccine. President-elect Harris took hers today for the same reason.”

The video is embedded below via tweet:

“President-Elect Harris”

pic.twitter.com/zRDhsTLyTb

— Benny (@bennyjohnson) December 29, 2020

This is not the first time Biden’s gaffes have caused suspicion from conservatives over Kamala Harris potentially becoming the President before Biden completes his time in office.

Twitter was quick to react to the flub, we have shared several of the most popular tweets below:

Joe Biden again says the quiet part out loud: “President-elect Harris” pic.twitter.com/e6kSlwDlnr

— Jake Schneider (@jacobkschneider) December 29, 2020

Joe Biden just called Kamala Harris “President-elect Harris.”

Is Joe Biden okay?

— Mark Lutchman 🇺🇸 (@marklutchman) December 29, 2020

President-elect Harris pic.twitter.com/LXeZBv2kUy

— Joel Fischer (@JFNYC1) December 29, 2020

In August Joe Biden tweeted out that he selected Harris because she’s “ready to lead on day one.”

If @KamalaHarris and I are elected, we’re going to inherit multiple crises, a nation divided, and a world in disarray. We won’t have a minute to waste.

That's exactly why I picked her: She's ready to lead on day one.

— Joe Biden (@JoeBiden) August 12, 2020

At 78 years old, Joe Biden will be the oldest US President to take office surpassing Trump and Reagan’s previously set records.