Sign up for the daily CJR newsletter . When Ronald Reagan won the presidency, in 1980, it was a victory long in the making. For almost half a century, conservatives had plotted ways to cut taxes and undo workers’ rights. Their playbook for political influence went something like this: create a think tank, publish reputable reports, build relationships with journalists and politicians, and disseminate free-market ideas to the public, creating a new common sense.  Today, the art of political influence is rather different. Think tanks no longer claim the power they once did and, since the rise of social media, newspapers and traditional journalists have lost their grip on public opinion. Perhaps this new state of affairs was best captured by Elon Musk when, shortly after taking over Twitter, in 2023, he declared that all press inquiries would receive an automated reply with the poop emoji. That is not the move of someone who believes the press is an essential tool in influencing public opinion.…