Yeah if we had another Teddy Roosevelt then I'd be a Republican. How does a political party go from trust busting, and environmental conservation to the oil funded corporate shit show it is now?
The parties swapped political orientations in the 1930's-60's. Before the 30's, the progressives were called Republicans and the conservatives were called Democrats.
So, under Teddy, the Republican Party was the progressive party. No gymnastics needed.