Closest: I don't know, take your pick of the many socially liberal, moderate Republicans on the site. Though I will say I'm probably a little more (what they would call) "corporatist" than our more libertarian-minded Republicans.
Furthest: Probably Miles or MormDem? I don't know, the socially conservative populist folks.
Also, fun fact: "FURTHEST" should always be used if the "distance" you're talking about is conceptual in nature (this instance), while "FARTHEST" should only be used for physically measurable distances.
Thank you. Fixed.
Fun Fact: Not really
"Farther and further are comparative adverbs or adjectives. They are the irregular comparative forms of far. We use them to talk about distance. There is no difference in meaning between them. Further is more common" Cambridge Dictionaries
"Farther and further both mean at a greater distance, and they are used interchangeably in this sense. In the United States, though, farther is more often used to refer to physical distances, and further more often refers to figurative and nonphysical distances.. (...)This is not a rule, however, and further is often used for physical distances. The distinction does not exist in the U.K. and elsewhere in the (British) Commonwealth of Nations, where further is preferred for all senses of the word and farther is rare." Grammarist
