Despite getting drubbed in Wisconsin this week, Donald Trump has won more votes than any other Republican candidate this year. So, he’s doing OK, right? Well, for all the talk that unbound delegates and quirky convention rules could prevent Trump from winning the GOP nomination, it’s easy to forget that Republican voters also play a part. Trump’s 37 percent of the cumulative primary vote and 46 percent of delegates won so far may sound impressive, but his percentages make him the weakest Republican front-runner, at this point in the process, in decades.