President Trump Donald John TrumpBarr criticizes DOJ in speech declaring all agency power 'is invested in the attorney general' Military leaders asked about using heat ray on protesters outside White House: report Powell warns failure to reach COVID-19 deal could 'scar and damage' economy MORE highlighted former Vice President Joe Biden Joe BidenThe Memo: Warning signs flash for Trump on debates Senate Republicans signal openness to working with Biden National postal mail handlers union endorses Biden MORE's gaffes late Monday, saying the Democratic presidential candidate doesn't know "what office he's running for."

"Sleepy Joe doesn’t know where he is, or what he’s doing," Trump tweeted. "Honestly, I don’t think he even knows what office he's running for!"

WOW! Sleepy Joe doesn’t know where he is, or what he’s doing. Honestly, I don’t think he even knows what office he's running for! pic.twitter.com/454v9GFpgF — Donald J. Trump (@realDonaldTrump) March 3, 2020

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The tweet included a Fox News montage of gaffes that Biden has made over the years dating back to his time in the Senate.

The president's tweet followed comments that Trump made at a campaign rally in North Carolina on the eve of Super Tuesday earlier Monday night.

“Tomorrow, voters in states across the nation for Super Tuesday — not Super Thursday. Oh, he said Super Thursday! You can’t do these things. Can you imagine if I said Super Thursday? I would be over, right? I would be over,” Trump, who has his own history of making false or misleading statements, said of Biden.

The 2020 Democratic presidential primary race has cleared up considerably since the weekend, with billionaire Tom Steyer Tom SteyerTV ads favored Biden 2-1 in past month Inslee calls Biden climate plan 'perfect for the moment' OVERNIGHT ENERGY: Trump administration finalizes plan to open up Alaska wildlife refuge to drilling | California finalizes fuel efficiency deal with five automakers, undercutting Trump | Democrats use vulnerable GOP senators to get rare win on environment MORE, former South Bend, Ind., Mayor Pete Buttigieg Pete ButtigiegBogeymen of the far left deserve a place in any Biden administration Overnight Defense: Woodward book causes new firestorm | Book says Trump lashed out at generals, told Woodward about secret weapons system | US withdrawing thousands of troops from Iraq A socially and environmentally just way to fight climate change MORE and Sen. Amy Klobuchar Amy KlobucharEPA delivers win for ethanol industry angered by waivers to refiners It's time for newspapers to stop endorsing presidential candidates Biden marks anniversary of the Violence Against Women Act, knocks Trump and McConnell MORE (D-Minn.) all ending their campaigns.

Both Buttigieg and Klobuchar have endorsed the former vice president.