Back in July, it seemed that Donald Trump's victory in the November 2024 US presidential election was almost certain. President Joe Biden's health problems caused a significant drop in his popularity and an unsuccessful assassination attempt on Trump seemed to seal his presidential race.
However, Trump's campaign was focused on attacking Joe Biden's policies and attitude, which is why the sudden change of the Democratic Party's candidacy from Joe Biden to current Vice President Kamala Harris changed the US election race. Polls are currently too close to call a clear winner, and everything may come down to the pivotal swing states.
Source: 270towin.com, Ballotpedia.org