I go back 70 years and there have been none during that period. Of course we had Gov. Theodore McKeldin and Senators Charles (Mac) Mathias and J. Glenn Beall - but they were all RINO's of the first magnitude.
We've have a couple of Congress persons, the gutsiest were women - Helen Bentley and Marjorie Holt. I was proud to call the latter my Congresswomen until she retired.