There is always a Left-Right spectrum. That was so even in the Roman Republic. But the “teams” or their characteristics shift, as our political system evolves. For years, bien-pensant Leftists insisted that the Right-Conservatives-Republicans (different expressions on the spectrum) had moved to the right. They said this in 2012 (e.g., here and here, in 2015in 2016 (e.g., here and here), in 2017, and even in 2018 (here and here). Some even said that the Democratic Party had moved to the right.
But by 2018 it became increasingly difficult to ignore the Left-liberal-Democrats move to the Left. Especially after Trump has governed as a standard right-wing Republican for 3 years. Tax cuts for the rich and more military spending like Reagan and Bush Jr. Hatred for arms control treaties, like conservatives back to 1964. Harsh measures on immigrants from the South, like FDR and Obama.
David Graham, staff writer at The Atlantic insisted that the Party was being pulled to the Left by voters. By this year it became impossible to hide. Time to retcon US political history! For that, they call on the heavy hitters at the New York Times: “What Happened to America’s Political Center of Gravity?” by Sahil Chinoy, based on data from The Manifesto Project. They open with comforting words to the Left.