Six pivotal battlegrounds in 2024 presidential election

WASHINGTON — President Joe Biden and his predecessor Donald Trump clinched enough support last week to become the standard-bearers for their parties in November's presidential election.

Under the U.S. Constitution, each of the 50 states holds its own vote for the next commander-in-chief and candidates are awarded "electors" from each state according to its size.

With candidates needing 270 electors to win the White House, elections tend to be decided in the hotly-contested "swing states" with a history of alternating between Republican and Democratic candidates.