...and they have been squealing like little piggies all day...
Understand the roots of "The Progressive Movement' are that they are Fascist. Mussolini was one of the earliest advocates of the philosophy - and was, in the 1930's, widely revered by many radical leftists in the US.
All of this history is well documented in "Liberal Fascism" by Jonah Goldberg - great read.
Essentially - your term "Republican Progressives" is an oxymoron. Progressives are "statists" and belong to the left.
None of this means that there are not liberal Republicans - RINO's....or as I prefer... "imposters", like I believe McCain to be. But lets keep our terms straight - it is in the interest of the enemy to conflate and confuse all these terms.