People (both conservative and other) seem to use the word “literalism” as a general sorting principle, in order to designate two different groups of people: those who read the Bible literally and those who do not.
I hear this from my students all. the. time.
I don’t think they know what “literal” means. It (usually) means “not metaphorical.” However, it is not clear that there is one group of people who read everything metaphorically, and who oppose themselves to another group that reads everything literally.
Everyone reads the idea that Jesus is the “bread of life” metaphorically. Everyone reads “if your eye causes you to sin, cut it out” metaphorically. Almost everyone reads “give all your money to the poor” metaphorically.
The category of “literal” readers is simply not a useful sorting category. Literal reading/metaphorical reading simply does not map onto conservative/liberal.