Looking back at the 2020s from our vantage point in 2030, the first great event was the complete destruction of Donald Trump’s Republican Party. As the former Republican consultant Mike Murphy had noticed, there were roughly 300 state and federal elections during the Trump years and Republicans did horribly in most of them. The 2020 vote was a continuation of that trend. Trump’s landslide defeat left him humiliated, and the Republicans lost their Senate majority.