The resounding defeat of Sen. Luther Strange, President Trump’s preferred candidate in Tuesday’s primary election, carries with it an important lesson about the true motive force that has roiled politics for a decade.

When the Tea Party took over the GOP in 2010 and propelled Republicans to a majority in the House, the wave was easily mistaken as one driven by ideological, free-market, libertarian, or conservative ideas. The same wave seemed to be rolling in 2014.