BBC:
Joe Biden and Donald Trump are the two major party candidates in the 2024 presidential election, but dozens of other people have filed to run.
None are on a realistically possible path to the White House, but the most well-known threaten to siphon away support from the the Democratic president and his Republican rival.
Here are the candidates with the greatest potential to disrupt the race.
A former environmental lawyer known for his anti-vaccine activism, Mr Kennedy initially sought to run as a Democrat.
But after failing to gain support within the party that is home to his family’s political dynasty, the 70-year-old mounted an independent challenge to what he called the “two-headed monster” of American politics,
At least 15 of his relatives have endorsed Mr Biden, which could blunt the threat Mr Kennedy poses to the president’s re-election.
“The Democrats are frightened that I’m going to spoil the election for President Biden. The Republicans are frightened that I’m going to spoil it for President Trump,” he said at a rally in Philadelphia.
“The truth is, they’re both right.”
During his campaign, Mr Kennedy has been criticised for repeating debunked conspiracy theories, such as a connection between childhood vaccines and autism, and for once likening Covid vaccine mandates to Nazi Germany.
But his populist economic message and criticism of the two major parties has seen him break through among many disaffected and independent voters.
Mr Kennedy stands little chance of winning the presidency – he has so far qualified to be on the ballot in only seven states – but polls show that he may be drawing away support from both Mr Biden and Mr Trump.
In March, he chose Silicon Valley lawyer and philanthropist Nicole Shanahan, another newcomer to presidential politics, as his running mate. Previously a long-time Democratic donor, she bankrolled Mr Kennedy’s attention-grabbing Super Bowl ad.
