> The right will successfully reproduce their political alignment sometimes, of course, but they also effectively act as the breeder population for the left. I

> The right will successfully reproduce their political alignment sometimes, of course, but they also effectively act as the breeder population for the left. I think the right has been evolving higher memetic immunity, which is causing this strategy to become less effective over time. Increases in homeschooling and private religious schools – school vouchers in the US really help with that. Reduced rates of cross-political friendship, dating and marriage. Increased geographic sorting based on ideology. Social media echo chambers. The "right-wing media ecosystem" (see e.g. Libs of Tiktok) is a lot more engaging than it was 40 years ago. Internet filtering (some religious groups pressure even adults to install it.) Increasing political pressure on universities to moderate their politics reduces their effectiveness at transmitting left-wing politics to students, meanwhile right-leaning alternative tertiary institutions are growing. Also, odds of political defection is partially determined by personality traits, which are partially genetic. This creates selective pressure to reduce the frequency of defection-promoting alleles in right-leaning populations across generations, which is a genetic rather than memetic factor predicting that conservative retention rates will rise over decades to come. See https://pmc.ncbi.nlm.nih.gov/articles/PMC3125629/ https://pmc.ncbi.nlm.nih.gov/articles/PMC3125629/ which discusses this with respect to genes for religiosity, which is heavily overlapping with (albeit not quite the same as) political conservatism.