I really do expect Democrats to maintain relevance by going in a militaristic and interventionist angle over the next few decades.)
Which actually would just be a return to the historical consensus. Conservatism being the more militaristic/interventionist force was a result of the neoconservative ideology of the Cold War, which carried into the War on Terror - and the relative isolationism/pacifism of the left results from the peculiarities of the Vietnam War. But historically, conservatives were the isolationists in American politics, while America's interventionist policies were largely shaped by progressives in both parties (both Roosevelts, Wilson, and Truman probably played the biggest role).
Huh? McKinley invented American imperialism.
