COLUMBIA, SC — THE GOOD THING about Brad Hutto is that he doesn’t try to convince us that Lindsey Graham is a liberal. Which is to say that, unlike the six opponents Mr. Graham easily swept aside in the Republican primary, and unlike the reality-show self-promoter who is self-financing a quixotic independent campaign against him, Mr. Hutto is not unhinged from reality. To the contrary, Mr. Hutto has had a respectable career in the state Senate, where, despite being part of an ever-dwindling minority party, he has had a significant amount of influence on public policy — sometimes for good,...