Rep. Hakeem Jeffries, D-N.Y., the House minority leader, said in a statement that his "thoughts and prayers are with" Trump.

"I am thankful for the decisive law enforcement response," Jeffries said. "America is a democracy. Political violence of any kind is never acceptable."

Senate Majority Leader Chuck Schumer, D-N.Y., said in a statement that he is "horrified" by the incident at the Trump rally in Pennsylvania and "relieved" that the former president is "safe."

"Political violence has no place in our country," Schumer added.

Elon Musk, the billionaire investor and head of X and other major companies, said shortly after tonight's incident in Butler, Pa., that he endorses Trump for president.

"I fully endorse President Trump and hope for his rapid recovery," Musk wrote in a post on X, along with video of Trump after Secret Service picked him up from the ground on the stage and he pumped his fist.

Independent presidential candidate Robert F. Kennedy Jr. called on Americans to reject division and violence following the incident at Trump's rally tonight.

"Now is the time for every American who loves our country to step back from the division, renounce all violence, and unite in prayer for President Trump and his family," Kennedy said in a post on X.

In a statement, United States Secret Service spokesperson Anthony Guglielmi said "the former President is safe."

The Secret Service said that the incident at the Trump rally in Pennsylvania is an "active investigation," and further information will be released when available.

Trump's eldest son, Donald Trump Jr., tweeted that his father will "never stop fighting to Save America." He shared a photo of his father pumping his fist with blood visible on his face as Secret Service whisked him away.

In a post on X, Pennsylvania Gov. Josh Shapiro decried "violence targeted at any political party or political leader."

"It has no place in Pennsylvania or the United States," said Shapiro, a first-term Democrat.

Shapiro said he has been briefed on the situation at Trump's rally in the city of Butler, adding that state police were at the scene and working with "federal and local partners."

Trump's presidential campaign said in a statement that the former president is "fine" and is "being checked out at a local medical facility."

"President Trump thanks law enforcement and first responders for their quick action during this heinous act," the campaign said.

The campaign did not provide any additional details, but said more information will follow.

Trump does not have a protective pool of reporters with him, which is what he had during his time as president and what Biden has around him now.

The pool follows the president during any public activities and provides information to the press corps.

Trump has Secret Service protection and a detail, but it’s hard to know where he is at this moment because there's no protective pool.