JFK was hardly killed for being too right leaning
Hinckley was simply insane
Lincoln was basically a war casualty and his death cost the south dearly and baring Andrew Johnson and one senate vote the radical republicans would have totally subjugated the south into their spoils fiefdom and political dependency they had envisioned leading to the war itself
Lincoln opposed the radicals in his own party over this and offered very generous terms as did Sherman and Grant
Trump is the first one I can think of clearly shot by a leftist except Ford who wasn’t wounded
Squeaky Fromm I’m assuming was a lefty I’m not sure the other lady
Sirhan Sirhan was a Christian Palestinian I’m not certain his motive
MLK not a potus candidate was shot by a righty anti communist racist ostensibly a Dixiecrat of sorts I’d assume
Garfield was shot by a nutty Republican resentful over not getting what he thought he was due
McKinley was killed by a crazed anarchist
Andrew Jackson a democrat was shot by a nut and as was his custom survived
There have been others including maybe a Capone minion on FDR and possibly Zionist extremists on Truman who were thwarted
It’s a mixed bag but the most common thread is nuts
If Reagan had died from his chest wound we would not have had his wonderful two terms with tax cuts, a booming economy, defense buildup which helped end the Soviet Union, etc, but rather the globalist champion of the New World Order, Poppy Bush.
The only political party that John Wilkes Booth had ever belonged to was the Know Nothing aka the American party.
That party was one of the group that along with the Whigs joined the Republican party.
Lincoln’s own VP Andrew Johnson was a Democrat. His Secretary of War Stanton. Many of his generals. There were Democrats aligned with Lincoln. The Republicans had no support in the South since people won’t vote to wage war on themselves.