From what’s been witnessed so far, would require catastrophic events before they jump ship. In the sense of pain and shared suffering. Literally, a suffering so great, political differences wouldn’t matter anymore. I believe the obvious differences of our two groups are: one group follows fact, science, inclusion, and the will of compromise and change for the benefit of all vs one group following race exclusion, tribalism, patriot authoritarianism, and a need to punish others for not sharing their beliefs. There are many other differences , to many actually. Jumping ship also requires a self admission, that they were wrong, and therefore, fooled. That’s a hard pill to swallow. The final admission though would be the hardest, a self reckoning, the other side was right. I don’t believe authoritarian type mindsets could comprehend those things unless all choices were exhausted. We exist in strange, unpredictable times though, who knows what future or changes these time will bring