Kennedy family will leave RFK Jr in the cold and endorse Joe Biden at 2024 campaign event in Philadelphia

President Joe Biden flies to Philadelphia for a campaign event Thursday where the Kennedy clan will deliver their endorsement, officially snubbing Robert F. Kennedy Jr's quixotic run for the White House. 

The move is no surprise but will allow Biden to use the inspirational themes of JFK's presidency as he campaigns for reelection.

The family has made clear its frustration at RFK Jr's conspiracy theories and the way he has used his famous surname for political gain.

And dozens of members of the dynasty joined Biden at the White House for St Patrick's day last month. 

On Wednesday, Kerry Kennedy will shiv her brother when she speaks for her family.

Many members of the Kennedy clan joined President Joe Biden at the White House on Sunday for St. Patrick's Day - and splashed the above photo across social media

President Joe Biden returned to the White House Wednesday with aide Bruce Reed. He flies to Philadelphia for a campaign event where he will be endorsed by the Kennedy family

'President Biden has been a champion for all the rights and freedoms that my father and uncles stood for,' the daughter of Robert Kennedy will say in excerpts shared in advance of the speech.

She will say the former President Donald Trump is taking America backwayds

'I can only imagine how Donald Trump’s outrageous lies and behavior would have horrified my father, Robert F. Kennedy, who proudly served as attorney general of the United States, and honored his pledge to uphold the law and protect the country,' she will say.

'Daddy stood for equal justice, human rights, and freedom from want and fear. Just as President Biden does today.'

She will tell supporters that a vote for Biden is a vote for democracy.

At least 15 family members will join Biden at a second event, before they will campaign for the prospective Democratic nominee by knocking doors and manning a phone bank.

Since RFK Jr joined the race, first as a Democrat and then as an independent, a number of his family members have come out against his run for the White House.

'The decision of our brother Bobby to run as a third party candidate against Joe Biden is dangerous to our country,' his siblings Rory, Kerry, Joseph P. Kennedy II and Kathleen Kennedy Townsend said in a statement last fall.

Many Kennedy family members have disavowed Robert F. Kennedy Jr. for his skepticism about vaccines and talked of conspiracy theories.

More of President Joe Biden's 2020 voters have moved over to independent candidate Robert F. Kennedy Jr. than those who supported former President Donald Trump four years ago the March DailyMail.com/J.L. Partners national survey found 

Kennedy, 70, an environmental lawyer, is running as an anti-vaccine activist.

His famous name has helped lift him in the polls. But it has proved a double-edged sword.

He was forced to apologize for a Super Bowl ad that resembled one for his uncle, John F. Kennedy, that ran in 1960.

The 30-second advert, which cost an estimated $7m, featured 'Kennedy, Kennedy, 'Kennedy For Me' which helped JFK beat Richard Nixon.

The split in the family was clear when members of the family, dressed in green, posed for a picture with Biden on the Rose Garden Steps last month. 

'From one proud Irish family to another — it was good to have you all back at the White House,' Biden posted on social media in response to a post with the photograph by Kerry Kennedy, the youngest daughter to the late Senator Bobby Kennedy.