President Joe Biden faces questions about his age and abilities and Donald Trump faces multiple legal challenges|Gage Skidmore|CC BY-SA 2.0

President Joe Biden and former president Donald Trump secured enough delegates in the primaries on Tuesday to make them the nominees of their respective parties for the November election.

The upcoming election will be the first presidential rematch between two US presidents in nearly 70 years.

Biden clinched the Democratic nomination after winning in Georgia, while Trump secured the Republican nod by winning in Washington State. Both candidates also won additional states in this primary round.

With their nominations secured, Biden and Trump are set to face off in a bitter and costly eight-month general election campaign.

It will offer voters a stark choice between candidates with very different agendas on various issues, including the economy, foreign policy, abortion, and immigration.

Trump’s continued claims of the electoral system being rigged raise concerns about his potential reaction to election results if he loses.

Both candidates have challenges within parties
Biden faces questions about his age and abilities, while Trump needs to appeal to the college-educated and suburban voters and navigate multiple legal challenges.

Key battleground states such as Georgia, Pennsylvania, Michigan, Wisconsin, North Carolina, Nevada and Arizona will play a crucial role in deciding the election.