Why did Theodore Roosevelt start his own political part?

Theodore Roosevelt started his own political party, the Progressive Party, in 1912 after becoming disillusioned with the Republican Party's shift away from progressive reforms. He believed that the party had abandoned its commitment to addressing issues like corporate power and social justice. His decision to run as a third-party candidate was also fueled by his desire to promote a platform focused on progressive ideals, including labor rights and environmental conservation, which he felt were being neglected. Ultimately, Roosevelt aimed to reinvigorate American democracy and challenge the status quo.