Hannukah is a popular option (possibly because there is no one right spelling). Fifty Shades of Grey seems to have sparked some confusion about how the color is spelled. Delaware is, alarmingly, Googling how to correctly spell a type of foot fungus. And Maine is awfully frustreted — frusterated — oh forget it — by this spelling stuff:
Why is English spelling so difficult? Partly due to the Great Vowel Shift, explained in 25 maps that explain the English language.
Update: It looks like the chart itself may have a misspelling where Louisiana is concerned.