In an attempt to celebrate his victory of mass Super Tuesday election sweeps, the only GOP candidate remaining and former President Donald Trump has challenged current US President and Democratic candidate Joe Biden to TV debates "anytime, anywhere, anyplace," as he said online in all capital letters.

Biden's campaign claimed in return that Trump was "thirsty for attention and struggling to expand his appeal," which came mere hours after the only GOP rival, Nikki Haley, dropped out of the race.

"It is important, for the Good of our Country, that Joe Biden and I Debate Issues that are so vital to America, and the American People," Trump wrote on his social media website, Truth Social, adding that the debates could be run by the Democratic National Committee, or the Commission on Presidential Debates.

77-year-old Trump stated that the debate commission, which claims to be non-partisan but is accused by conservatives of bias, was a "subsidiary" of the Democratic party.

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Still, Trump bashed Biden in saying that he is too old and forgets too much to debate him, while Biden said Trump is the one who's senile.

'Correcting your mistakes'

Upon being asked whether refusing to conduct a debate would prove doubts on Biden's "acuity", the White House press secretary referred the reporter to the president's re-election campaign, which has yet to confirm any debate possibilities, and suggested that the Republican follow the president's Thursday evening State of the Union address to Congress.

"If he's so desperate to see President Biden in primetime, he doesn't have to wait! He can join the tens of millions of Americans who will tune in to watch the State of the Union tomorrow night," Biden campaign communications director Michael Tyler said.

Trump responded he would watch the State of the Union and "will correct, in rapid response" his speech, taking a jab at the multiple times Biden has made mistakes and gaffes in his speeches.

Trump's increase in confidence comes from the results of the Super Tuesday votings, as he won 14 out of 15 states.

To mark his victory, in a speech at his Mar-a-Lago estate in Florida, Trump highlighted Biden's messy immigration policies, naming him the "worst president" in history, while commenting on his age. "Our cities are being overrun with migrant crime," he claimed. 

Trump had his share of voters' anger, as well. In North Carolina, voters said they don't see Trump as fit to serve as president if he was convicted of a crime, but in Virginia, more than half said he does even if he was convicted.

Trump's Super Tuesday victories included Maine and Colorado, the two states alongside Illinois that had sought to keep him off the ballot over his push to overturn the 2020 elections and the assault on the US Capitol that he was impeached for inciting.

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This comes as the United States Supreme Court is to announce at least a single verdict on Monday, the day before Colorado's presidential primary voting, in which a lower court removed Trump from the ballot for his role in the 2021 Capitol attack.