This is all I cand find that refers to 53% regarding the election. Not sure of your source, and I apologize for using a link to anything mainstream, but I sorta trust Pew and if anyone wants to read it, it is interesting, but doubting it will be read.
"On the negative side, 53% say Trump’s election makes them feel uneasy. About four-in-ten say his election makes them feel sad (41%) or scared (41%), and 31% say the election of Trump makes them feel angry."
To keep in context, this is the first para. I simply post reference to 53 initially because you used that number.
"Half of voters say they are happy Donald Trump was elected president, while about as many (48%) say that they are unhappy. Reactions are similar to 2012 (when 52% said they were happy Obama was reelected), but they are less positive than after Obama’s first presidential campaign in 2008, when 58% said they were happy he was elected
Presidential election reactions and expectations | Pew Research Center