I could not find where anything has been posted about the search term "Can I Change My Vote" so here you go. When you drill down to the article in the link you'll se e the writer determined which states are seeking this information more as compared to 2016.
I really wonder what the searchers' political affiliations are- that would be so telling
#Election2020
"Searches For 'Can I Change My Vote' Increase Dramatically Over 2016"