States that saw 20+point margin shifts between parties in consecutive elections

[Arbitrage1980]

If we stick to post-1972, the following come to mind:

Georgia: 1972-1976
New Hampshire: 1988-1992
Indiana: 2004-2008

[Politician]

Hawaii 2008
Indiana 2008
Arkansas 2000
Idaho 2000
Montana 2000
North Dakota 2000
West Virginia 2000
Wyoming 2000
New Jersey 1996
Arkansas 1992
Delaware 1992
Georgia 1992
Nevada 1992
New Hampshire 1992
Tennessee 1992
Colorado 1988
Hawaii 1988
Idaho 1988
Kansas 1988
Oklahoma 1988
South Dakota 1988

[morgankingsley]

I only knew of Georgia 1972-1976 off the top of my head. I think pretty much most southern states from 1972-1976 would qualify

[Arbitrage1980]

Hawaii 2008
Indiana 2008
Arkansas 2000
Idaho 2000
Montana 2000
North Dakota 2000
West Virginia 2000
Wyoming 2000
New Jersey 1996
Arkansas 1992
Delaware 1992
Georgia 1992
Nevada 1992
New Hampshire 1992
Tennessee 1992
Colorado 1988
Hawaii 1988
Idaho 1988
Kansas 1988
Oklahoma 1988
South Dakota 1988

Thanks. Super helpful. Man, I forget how much better Dukakis did than Mondale. Colorado is especially shocking: Reagan won it by 28 points while HW Bush won it by 8. His margin was lower than that of Obama 08!