J.D. Vance's selection as Donald Trump's running mate represents a significant shift within the Republican Party, embodying a new populist conservatism focused on American workers and rejecting traditional GOP orthodoxy. Vance's background, detailed in his book 'Hillbilly Elegy,' underscores his rapid rise from poverty in the Rust Belt to the U.S. Senate, resonating with Trump's base. His platform emphasizes protecting American jobs, ending reliance on foreign labor, and promoting domestic manufacturing. Despite some controversial views on issues like abortion and procreation, Vance's alliance with Trump signals a strong commitment to working-class conservatism and a break from establishment politics.