In a little more than a month, Republicans will finally begin voting in the primary over whom their nominee for president will be. But the race has been underway for months, and a lot has happened since then. Thankfully, the people at Civis Analytics made this great map that can help you catch up with what's happened so far in the GOP primary: Above all, the map shows just how dominant billionaire Donald Trump has been throughout the process. Sure, Ben Carson rose, and Trump's numbers took a small hit, for a bit. But since then, he has regained plurality...