Religion is increasingly a political signifier in the USA now. Many MAGA Trump supporters who claim to be Evangelical don't even go to church on any regular basis. "Secular Evangelicalism" is huge in the USA South.
This trend started with William Branham (progenitor of Latter Rain cult, The Message cult, prosperity gospel, healing-campaign revivalism ... leading to the current New Apostolic Reformation) and his mentor Roy E. Davis (Klan leader) in the 1930s. They started a political white supremacist cult with a religious bent. These two spawned a plethora of "heretical" movements still going strong today, a fusion of supremacist, new age ideas from the late 1800s, anti-communist, and evangelical/pentecostal ideas.
(Refer to the "Leaving The Message" YouTube channel. These guys, Branham and Davis, spawned the hydra.)
Eh, as an American I would say it checks out. We really hate each other.
Much of the get-out-the-vote effort on the right consists of reminding their voters why they hate the other side. This naturally pisses off the left. This leads to much angry rhetoric on the left. This rhetoric is nut-picked and put on blast by the media on the right. Etc. The situation isn't symmetric because the left has a lot of issues they're happy to run on: climate change, electoral reforms, education, health care. The right is mostly focused on their hatred of the left -- anti-wokeism, anti-CRT, anti-gender-whatever. The net effect is a lot of hatred.
Where can I learn more about this? I find it difficult to believe this is true for "the majority of people".