Republican Teddy Roosevelt was the John McCain of his day. After his first term, he ran as a third-party progressive candidate (The Bull Moose Party) which resulted in splitting the Republican ticket and handing the White House to Democrat Woodrow Wilson -- America's first anti-constitutionalist, progressive left, academic president.
Screw Teddy Roosevelt.
-— Republican Teddy Roosevelt was the John McCain of his day -—
In my youth, I blamed FDR for everything, but Progressivism really started in earnest at the turn of the century.