The direction of political discourse hasn't been toward "radicalization" per se. Democrats have only moved slightly to the left of where they were in the early

The direction of political discourse hasn't been toward "radicalization" per se. Democrats have only moved slightly to the left of where they were in the early 1970s, but the majority of that movement has taken place since 2011. Republicans, OTOH, have been moving rightward at a steady and near-constant pace since 1971, though they did start shifting faster around 2001. This has lead to Congress becoming significantly more conservative over time. Keep in mind, the Democrats would be considered just slightly left of center in most European countries. https://www.pewresearch.org/short-reads/2022/03/10/the-polarization-in-todays-congress-has-roots-that-go-back-decades/ https://www.pewresearch.org/short-reads/2022/03/10/the-polar... TL;DR: there's no "radicalization" taking place in the Democratic party. It's the Republicans that are driving it.