Former President Donald Trump described his lead challenger, Joseph Biden, ahead of the November presidential election as the worst president in the history of the United States.

In a fiery address following the Super Tuesday results, Mr Trump, speaking to a crowd of supporters at Mar-a-Lago, said the U.S. had endured significant setbacks that he described as “a great beating” during Mr Biden’s three-year tenure.

“He’s (Mr Biden) the worst president in the history of our country,” Mr Trump, adding that the 2024 presidential poll would be “the single most important day in the history of our country.”

Enumerating a litany of domestic and international challenges, Mr Trump pointed to issues like soaring consumer price inflation and ongoing conflicts in regions like Ukraine and Gaza, attributing them to what he perceives as Mr Biden’s failures in governance.

He also stressed that such crises would have been averted under his leadership.

The former president reserved particular attention for the ongoing immigration crisis at the southern border, a recurring focal point of his political discourse.

Although without concrete substance, Mr Trump alleged a surge in immigration-driven crime, exacerbating the challenges faced by immigration authorities and state officials inundated by the influx of undocumented migrants.

“We’re going to have to deport a lot of people, a lot of bad people, because our country can’t live like this,” he said, underscoring the urgency of addressing what he perceives as a looming national emergency. “Our cities are choking to death. Our states are dying. And, frankly, our country is dying.”

The former president did not limit his critique to domestic affairs but also lambasted Mr Biden’s handling of critical foreign policy matters, including the withdrawal of U.S. troops from Afghanistan and the complexities of the U.S.-China relationship.

Additionally, he accused the current administration of neglecting issues crucial to energy independence, echoing sentiments he has consistently championed throughout his political career.

Meanwhile, in a statement Tuesday night, Mr Biden considered his predecessor an “existential threat” to U.S. democracy.

“If Donald Trump returns to the White House, all of this progress is at risk,” Mr Biden said.

The U.S. president added, “He is driven by grievance and grift, focused on his own revenge and retribution, not the American people.

“He is determined to destroy our democracy, rip away fundamental freedoms like the ability for women to make their own health care decisions, and pass another round of billions of dollars in tax cuts for the wealthy — and he’ll do or say anything to put himself in power.”