1) Minority peoples tend to be progressive. This has to do with the problem of ‘signaling’ (status) as well as access to opportunity and power. There is nothing special about jewish progressivism other than they’re an exceptional minority, their exceptionalism is verbally oriented, (and western germanic culture is more technically oriented) so they have more impact on society because of their preference for and dominance in media. There are plenty of conservative jews here and in Israel.
2) Conservatism in the USA, is the remnant of aristocratic agrarian manorialism, coupled with the anglo classical liberal political instituions, under a weak federal government we call ‘the church’. It is a social and political strategy for a division of powers that can militarily hold land using weak forces. The west had to keep the ‘magian and totalitarian’ east at bay since the time of the Ancient Greeks – maybe earlier. So, Western moral content is structured to hold territory necessary for farming, even against superior numbers. By contrast, Judaism is a dasporic culture of merchants and traders and its moral content does not contain the same prescriptions as does aristocratic christianity (Germanized christianity). The most obvious of these differences are a) the Bazaar exchange ethic vs the Warrior exchange ethic. Whereby christians take account of external costs and jews do not. b) The western concept of warranty is not present in the jewish ethic. c) western universalism is unique in human history. Jewish ethics are familial and tribal not universalist.
These are long held historical differences in the moral codes of the different societies. There is some argument as to whether they have some biological basis to them. But that won’t be settled by science for decades yet. The two societies operate on different principles. They are to some degree symbiotic.
You might consider reading Power and Weakness by Kagan. http://web.clas.ufl.edu/users/zs… The weak are generally pacifist ad progressive and the strong are generally expansionist and conservative. It is a natural human reaction to various circumstances.
This may be a lot to grasp but these genetic, historical, environmental and strategic differences lead to the different biases between conservative christians and liberal jews.