Here are the US presidents, former presidents and candidates who have survived assassination attempts

Former President Donald Trump fell to the ground Saturday, clutching his face after what sounded like gunfire at a rally in Pennsylvania.

Blood could be seen on his face as he was carried away by Secret Service.

Multiple presidents and former presidents and candidates for president have been attacked in US history, according to a CNN report from 2011 and a list of instances of political violence that includes attacks on senators, congressmen and governors compiled by CNN’s research library.

• President Andrew Jackson: In the pre-Civil War era, he was shot at while attending a funeral in the Capitol. The shooter fired twice, but the gun failed.
• President Theodore Roosevelt: Like Trump, he was trying to get his old job back during the 1912 campaign. He was shot on the way to a speech in Milwaukee by a saloon keeper.
• President Franklin D. Roosevelt: He was president-elect when a would-be assassin fired at him in Miami in 1933. The shooter, Guiseppe Zangara, missed Roosevelt but killed Chicago Mayor Anton Cermak.
• President Harry Truman: He took over the presidency after Roosevelt died and was shot at across from the White House by Puerto Rican nationalists in 1950.
• Alabama Gov. George Wallace: The segregationist was running for president for the third time in 1972, and was shot after a campaign event outside Washington, DC. The shooting left him paralyzed from the waist down.
• President Gerald Ford: He faced two assassination attempts in quick succession in 1975. 
• President Ronald Reagan: He was shot in 1981 outside the Hilton in Washington, DC, after giving a speech. His press secretary, James Brady, was more seriously wounded than Reagan and later became an activist for gun control.
• President Barack Obama: An Idaho man was charged with the attempted assassination of Obama when he fired shots at the White House in 2011.

Four presidents — Abraham Lincoln, James A. Garfield, William McKinley and John F. Kennedy — have been assassinated.