The above is just the election of George W. Bush, but I could point out a similar thing for Trump:
Or, for contrast, compare it to religiosity/irreligiosity throughout the world:
Time and time again, the most progressive countries AND the most progressive US states have proven to be the least religious. I watch progressive Christians try to make the case for the Bible being progressive, and there's something oddly emotionally satisfying about that, but there's no sense ignoring statistics. However the Bible was supposedly intended to be interpreted (and its authors are no longer around to explain the contradictions) there's an undeniable pattern of conservative effects.
I'm going to propose a tentative explanation. Feel free to either critique it or offer alternative ones:
1. The Bible draws in the poor by condemning greed, condemning the wealthy, etc... making the poor more likely to genuinely like it, and giving the rich more incentive to fake liking it. Then, the Bible says that if someone smacks you around, you should turn the other cheek and let them smack you again. Obviously, this isn't just to be taken literally, but is to be extended to abusive behaviour; physical or otherwise in general. Obviously, someone with a conscience might feel bad about mistreating someone if they react meekly, depending on how biased their conscience is on the matter. However, some wealthy businessperson who wants to assert dominance over his/her employees will see in this a ripe opportunity to get away with abusing them, knowing their victims are too meek to stand up for themselves. Not all rich people are evil, obviously, but in a marketplace where asserting dominance over employees is a competitive advantage, a disproportionate slice of evil people will get rich. To cap it off, the Bible even threatens the greedy with punishment in the afterlife. If the poor believe it, they might be less inclined to do anything about greed here and now. So for comparison, here's one more map for you; poverty by state.
I specify Christianity in particular not to deny that Islam has similar effects on social issues, (not sure about economic ones) but because Christianity is the one with the most direct effects on the first world. (For now.) And "religion" is too broad to comment on.
EDIT: Tweaked wording to clarify my awareness of the metaphorical nature of turning the other cheek.