The political side that is the "correct" side.

[Angrboda]

Values themselves are neither morally correct nor incorrect, so your question doesn't seem to make sense. I tend to follow the work of Jonathan Haidt who theorizes that both the morals and politics of the left and the right are founded on the same themes, they just place different emphasis on the varying themes (see graph below). Beyond that is the question of whether the policies of the left and the right are themselves correct. That tends to come down to a question of whether or not the goals of the policy are worthwhile and the policy itself is an effective means of reaching that goal. A lot of the discussion of the latter simply rests on speculation, and the former tends to rely on assumptions that aren't shared, so it tends to be less a disagreement about values and more one of facts. I'm inclined to believe the right is less ethical than the left, often misrepresenting facts toward the achievement of their goals, but that's a perception I freely admit I have no hard evidence for.



From Why We Disagree on Moral Issues