On February 3, the Florida Secretary of State released a report on the November 2016 election that, among other things, shows that more than 83,000 Florida voters cast a write-in for President for someone who wasn’t a declared presidential write-in candidate. This figure is not part of the Florida Official Canvass of Votes, and there will be no breakdown as to who received these votes. See this story.
It is likely that Evan McMullin received a fair number of those votes. The Florida deadline for filing for write-in status is in July, an absurdly early deadline. McMullin didn’t declare his candidacy until August 2016 so his write-ins could not be tallied. The July deadline is just one of many silly laws that injured McMullin, yet, sadly, he didn’t file any court challenges to any of these laws. Thanks to Michael Drucker for the link.