On January 30, 1835, US president Andrew Jackson was confronted by Richard Lawrence, who twice attempted to shoot him in the back with a pistol but the gun did not fire. Andrew Jackson proceeded to beat the crap out of Lawrence with his cane. Jackson did not run again in the 1836 election.
On October 14, 1912, former US President and running candidate for the 1912 election Theodore Roosevelt was shot in the chest by John Schrank while on the campaign trail in Milwaukee. He stayed at the podium and delivered the remark "Friends, I shall ask you to be as quiet as possible. I don't know whether you fully understand that I have just been shot—but it takes more than that to kill a Bull Moose." Despite the extreme badassery of this line, he lost the 1912 election to Woodrow Wilson.
On May 15, 1972, US presidential candidate George Wallace was shot by a man named Arthur Bremer in Laurel, Maryland. He was injured enough by the attempt that he retired from the 1972 election. He ran for president again in 1976, and did not succeed.
On September 5, 1975, US president Gerald Ford was confronted on the grounds of the Capitol Building by Lynette Fromme, who attempted to shoot him but was not successful; he then went on to be shot at by another woman, Jane Moore, less than two weeks later. Ford campaigned for re-election in the 1976 election, but lost to Jimmy Carter.
While looking up citations for this post I found out about any number of presidential assassination attempts I never even knew about; Wikipedia has an entire category page for them (and another for successful assassinations.) Gerald Ford was shot at twice in two weeks, and Barack Obama at least three times.
Sadly, this type of political violence in the United States is not at all new, not at all uncommon, and the incidence of attempted assassination seems to have no correlation whatsoever as to the individual's success rate in future elections.
Malcom X :
“The White liberal is the worst enemy to America and the worst enemy to the Black man. Let me first explain what I mean by this White liberal. In America there’s no such thing as Democrats and Republicans anymore. That’s antiquated. In America you have liberals and conservatives. This is what the American political structure boils down to among Whites. The only people who are still living in the past and thinks in terms of “I’m a Democrat” or “I’m a Republican” is the American Negro. He’s the one who runs around bragging about party affiliation and he’s the one who sticks to the Democrat or sticks to the Republican, but White people in America are divided into two groups, liberals and Republicans…or rather, liberals and conservatives. And when you find White people vote in the political picture, they’re not divided in terms of Democrats and Republicans, they’re divided consistently as conservatives and as liberal. The Democrats who are conservative vote with Republicans who are conservative. Democrats who are liberals vote with Republicans who are liberals. You find this in Washington, DC. Now the White liberals aren’t White people who are for independence, who are liberal, who are moral, who are ethical in their thinking, they are just a faction of White people who are jockeying for power the same as the White conservatives are a faction of White people who are jockeying for power. Now they are fighting each other for booty, for power, for prestige and the one who is the football in the game is the Negro. Twenty million Black people in this country are a political football, a political pawn an economic football, an economic pawn, a social football, a social pawn...”
In nutshell Democratic are the worst enemy to America