> I submit that a present-day conservative would likely be a staunch liberal in those days. The Left has simply moved much further to the left.
... on social issues. The mainstream left and right, as far as those in power, remain about as similar on economics as they have since the right neoliberal movement took over both parties in the 80s—a position that both parties' extremes strongly disagree with, and that isn't particular popular among their electorate more generally (which is why Trump's just-say-what-R-voters-say platform fell, remarkably, outside that consensus) but which nonetheless drives most of both parties' activity, on that front.
... on social issues. The mainstream left and right, as far as those in power, remain about as similar on economics as they have since the right neoliberal movement took over both parties in the 80s—a position that both parties' extremes strongly disagree with, and that isn't particular popular among their electorate more generally (which is why Trump's just-say-what-R-voters-say platform fell, remarkably, outside that consensus) but which nonetheless drives most of both parties' activity, on that front.