I recently read that Comey was a long time Republican. Hopefully
that has not influenced the basis for his actions but they do
appear unprecedented and strange.
From Wikipedia:
"Although Comey was a registered Republican for most of his adult life, he disclosed during Congressional testimony on July 7, 2016 that he is no longer registered in any party.[73] In the past Comey donated to U.S. Senator John McCain’s campaign in the 2008 presidential election and to Governor Mitt Romney’s campaign in the 2012 presidential election.[74]”