LOL, I could totally see that. I think Sonny (Kiriakis, not Corinthos! -- though Corinthos most likely too) is definitely a Democrat.
Edward was not purely a business mogul ... I could see him having that secret charitable PBS side, much like his connection to Mary Mae and the Wards. Besides, PBS is not a totally partisan thing. Plenty of Republican families have their kids watch Sesame Street. There are also business things like Nightly Business Report on PBS. Even more selfish rich people would like to feel good about themselves by saying they give money to causes.
I agree generally with your point -- my family was broadly Republican and PBS was always on in my home. Not just Sesame Street -- I'm talking Wall Street Week, Masterpiece Theatre, Miss Marple (the parents were OBSESSED with Miss Marple), and Are You Being Served? which was totally non-PC.
Having said that, the line about PBS in Edward's will was not
prompted by PBS's reputation of stellar, educational programming. It was prompted by a much talked-about issue in last year's presidential campaign, where Obama defended public funding to PBS at a time when the Reps were looking to slash spending on such things. So there was a very definite political connotation attached to the PBS throwaway line. Which is fine; I thought it was amusing that EQ would rather leave his money to Big Bird than to Tracy. Plenty of businessmen are Dems -- Edward in some ways is a cuddlier, funnier version of Joseph P. Kennedy. I'm just saying that, in my mind's eye, I figured the character would veer more towards GOP.