The slandering of Claude Pepper ("homo sapien/thespian"). UL or all fact?

This columnist, one of the few Google references I could find, says it was in a “speech”. I can’t find the speech itself anywhere offhand.
http://www.rrstar.com/opinion/columnists/pat/0329.shtml

Here’s the other reference, another columnist, in which he mentions that Smathers always denied the story.

Interview with Claude Pepper. He does not mention it.
http://www.history.ufl.edu/oral/FP30.html

An analysis of the election, which does not mention it.
http://www.folioweekly.com/archives/old%20stories/0718/page7.html

So, you tell me. Smathers denies it, Pepper himself and a fairly serious analysis of the election don’t mention it. That’s about as far as I got.

I don’t think Florida voters were that ignorant in 1950, so if I had to guess, I’d guess that it’s just a “humorous rustics” story repeated by columnists.