US-PresidentialElectionResults since 1828
The states' deviations of the margins (Whigs/Republicans minus Democrats) from national average since 1828:drive.google.com/…_uoFHFvdxAZX4-GF_2NkJJl19/view
Be aware: Strong third parties - Dixiecrats, Th.Roosevelt, Perot aso. - can result in misleading numbers.