If I may be so bold to answer your question from my perspective, Jews see politics as separate from friendship. Their politics are based not on who is their friend, but on what they believe in. The are liberal primarily because they believe in freedom over state control as the state is the one who leads the way in pogroms of Jewish mass extinction.
Thats my guess, from living with them for years...
That cannot be true. "Liberalism" (as the term is used in America) has nearly nothing to do with freedom, and everything to do with state control. "Liberalism" means confiscatory taxation, extreme regulation of business, restriction on speech, gun control, erosion of property rights, centralisation of government power ...
The only freedoms that "liberalism" seems to care about are the "freedom" to publish pictures of naked people, and the "freedom" to kill unborn babies.
I know that they're not abortionist pornographers ... but if they're truly interested in political freedom, then voting for "liberals" (as the term is used in America), which they manifestly do, is incredibly stupid. I can only conclude that 1) they're idiots or 2) they're not really interested in freedom or 3) they're brainwashed by the MSM.
I'd make the same observations about "Blacks" and Catholics also voting against their interests. In all cases, I think the primary problem is MSM brainwashing. I see entirely too much evidence of it among my friends and relatives.