The idea that conservatives support Israel because of some kind of end time prophesy is completely absurd. It’s a lie that leftists tell so that they can claim that Republicans are anti-semites despite their typically strong support for Israel. I’ve seen it often repeated on SB but I don’t recall ever talking to a conservative who believed that. Even among Fundamentalist Christians, who are a minority among Republicans, it’s a fringe belief and not a factor in the GOP’s or America’s attitude towards Israel.
Republicans who like Israel overwhelmingly do so for secular reasons, though more moderate religious motivations are a factor: like Judaism’s ties to Christianity, their central role in the Bible, or even that Jews are God’s chosen people and that helping them gets God’s blessing.
For the most part, “minorities” (not just racial groups and Jews but also women and alphabet) support the Democrats because they are leftists and trying to appeal to them would involve going further to the left. Would that work? Of course not, the Republican Party has been trying that for decades and when they move to the left, then the Democrats can themselves move even further to the left. When you abandon your principles to become more like your opponent, you lose even when you win, because your victory only serves their agenda and not the one your party once fought for. Which is probably a major reason why the GOP isn’t very good. The salt has lost its saltiness, to paraphrase the Bible.
To some degree, various demographic groups that the leftists venerate have been tricked by leftist media control to think that conservatives are bigoted. The real problem, though, is that those supposedly underprivileged demographic groups support the Democrats for the gibs, not because they actually think they are persecuted.