The Plot Against America had Lindbergh winning every state except Maryland which is extremely unrealistic. He'd do well in the Midwest though where isolationist sentiment was high. Going by the book which involves him picking Burton K Wheeler as his runningmate, if he takes the new deal off the table and campaigns solely on opposition to US involvement in Europe I'd predict a narrow victory. Lindbergh wins MA due to Joe Kennedy endorsing him and throwing a lot of money into turning the Irish-Catholic vote over to the GOP
Lindbergh/Wheeler 272
Roosevelt/Wallace 259
