Media reports say U.S. President Joe Biden and former President Donald Trump swept to victory in statewide nominating contests across the country on Tuesday, setting up a historic rematch in November's general election despite low approval ratings for both candidates.

According to Reuters, Trump won the Republican votes in 14 of 15 states - including delegate-rich California and Texas - brushing aside former U.N. Ambassador Nikki Haley, his last remaining rival.

Al Jazeera says Democratic President Biden has reportedly already won every state announced so far, plus the mail-in Democratic primary in Iowa.  He did, however, face a loss in the US territory of American Samoa.

The BBC reports that despite the lack of enthusiasm, both men swept nearly all of the contests as voters in 15 states and one territory cast their ballots on the biggest night in the primary calendar.

Mr. Trump is reportedly projected to win contests in Alabama, Arkansas, California, Colorado, Maine, Massachusetts, Minnesota, North Carolina, Oklahoma, Tennessee, Texas and Virginia.

Mr. Biden was projected to win the same states plus Utah and Vermont, but lost to a Baltimore businessman in the US territory of American Samoa.  He also won the Iowa caucus, which announced its results on Tuesday.

The BBC notes that as the two candidates racked up their wins on Super Tuesday, they characterized each other as threats to the United States.